Faculty Profiles - SAKUYAMA TAKUMI

写真a

SAKUYAMA TAKUMI

Scopus Paper Info

Paper Count: 5 Citation Count: 11 h-index: 2

Click to view the Scopus page. The data was downloaded from Scopus API in July 28, 2026, via http://api.elsevier.com and http://www.scopus.com .

Google Scholar Information (Citations per year)

Citation Count: 222 h-index: 7 i10-index: 5

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Scopus Information

Organization

Undergraduate School School of Agriculture Professor

Contact information

Homepage

https://scholar.google.com/citations?user=Du8NraMAAAAJ&hl=ja

Profile

　1965年岩手県生まれ。岩手大学農学部卒業、英国ロンドン大学優等修士（農業経済学）、同サセックス大学修士（開発経済学）、青山学院大学博士（国際経済学）。専門は貿易政策論。

　1988年に農林水産省に入省後、農水省企画室企画官（食料・農業・農村基本法を担当）、外務省OECD日本政府代表部一等書記官（在パリ）、農水省国際経済課課長補佐（WTO農業交渉を担当）、国連食糧農業機関エコノミスト（在ローマ）、農水省国際部国際交渉官（TPP参加協議等を担当）等をへて、2013年に明治大学に着任し、2018年から現職。米国カリフォルニア大学デイビス校訪問研究員、日本農業経済学会常務理事（『農業経済研究』編集委員長）を歴任。

　主著は、『農政トライアングルの崩壊と官邸主導型農政改革－安倍・菅政権下のTPPと農協改革の背景』（農林統計協会、2021年）『食と農の貿易ルール入門－基礎から学ぶWTOとEPA/TPP』（昭和堂、2019年）、『日本のTPP交渉参加の真実－その政策過程の解明』（文眞堂、2015年、日本貿易学会奨励賞受賞）、『農業の多面的機能を巡る国際交渉』（筑波書房、2006年）等。

External link

Degree

Doctor of Philosophy in International Economics ( 2011.3 Aoyama Gakuin University )
Master of Arts in Development Economics ( 1996.1 University of Sussex )
Master of Science in Agricultural Economics with Distinction ( 1994.11 University of London )
Bachelor of Agriculture ( 1988.3 Iwate University )

Research Interests

Trade Policy
Political Economics
Agricultural Policy

Research Areas

Humanities & social sciences / International relations / International political economy
Humanities & social sciences / Economic policy / International economics
Environmental science/Agricultural science / Agricultural sociology / Agricultural economics

Education

Aoyama Gakuin University Graduate School of International Politics, Economics and Communication Department of International Economics

2008.4 - 2011.3

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Country/Region： Japan

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University of Sussex Graduate Research Centre in Social Sciences Development Economics

1994.10 - 1995.8

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Country/Region： United Kingdom

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University of London Wye College (merged with Imperial College) Department of Agricultural Economics

1993.10 - 1994.9

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Country/Region： United Kingdom

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Iwate University Faculty of Agriculture Department of Agronomy

1984.4 - 1988.3

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Country/Region： Japan

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Research History

Meiji University

2024.4

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Country/Region：Japan

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Meiji University Department of Agri-Food and Environmental Policy, School of Agriculture Professor

2018.4

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Country/Region：Japan

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University of California, Davis Agricultural Issues Center Visiting Scholar

2018.4 - 2019.3

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Meiji University Department of Agri-Food and Environmental Policy, School of Agriculture Associate Professor

2013.4 - 2018.3

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Country/Region：Japan

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Cabinet Secretariat National Strategy Office Counsellor

2011.12 - 2012.12

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Aoyama Gakuin University WTO Research Center Research Fellow

2011.4 - 2014.3

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Country/Region：Japan

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Ministry of Agriculture, Forestry and Fisheries International Economic Affairs Division, International Affairs Department Director for FTA Negotiations

2007.4 - 2013.3

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Food and Agriculture Organization of the United Nations Economic and Social Department Economist

2004.4 - 2007.3

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Ministry of Agriculture, Forestry and Fisheries International Economic Affairs Division, Minister's Secretariat Deputy Director for WTO Agricultural Negotiations

2002.4 - 2004.3

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Ministry of Foreign Affairs Permanent Delegation of Japan to the OECD First Secretary

1999.5 - 2002.3

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Ministry of Agriculture, Forestry and Fisheries Policy Planning Division, Minister's Secretariat Assistant Director

1997.4 - 1999.5

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Ministry of Agriculture, Forestry and Fisheries International Economic Affairs Division, Economic Affairs Bureau Assistant Director for OECD Affairs

1995.9 - 1997.3

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Japan International Cooperation Agency Overseas long-term trainee

1993.8 - 1995.8

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Ministry of Agriculture, Forestry and Fisheries Commerce and Commodity Futures Regulation Division, Food and Marketing Bureau Section Chief

1992.5 - 1993.8

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Ministry of Agriculture, Forestry and Fisheries Research Division, Minister's Secretariat Administrator

1990.4 - 1992.5

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Ministry of Agriculture, Forestry and Fisheries Finance Division, Economic Affairs Bureau Administrator

1988.4 - 1990.3

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Professional Memberships

International Agricultural Trade Research Consortium

2018.5

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The Food System Research Association of Japan

2016.6

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Japan Public Choice Society

2013.11

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Japan Academy for International Trade and Business

2013.3

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Japan Society of International Economics

2006.10

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International Association of Agricultural Economists

2005.2

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Agricultural Economics Society of Japan

1995.9

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International Academic Society for Asian Community

2017.5 - 2018.3

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Japan Economic Association

2009.8 - 2017.3

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Japan Section of the Regional Science Association International

2009.4 - 2013.1

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Rural Planning Association

2002.12 - 2007.3

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Society for Environmental Economics and Policy Studies

1995.11 - 2002.3

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British Agricultural Economics Society

1995.10 - 2011.3

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Committee Memberships

Agricultural Economics Society of Japan Managing Director (Editor-in-Chief, Journal of Rural Economics)

2021.4 - 2023.3

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Committee type：Academic society

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日本学術振興会特別研究員等審査会専門委員

2019.7 - 2021.6

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Committee type：Academic society

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日本学術振興会国際事業委員会書面審査員・書面評価員

2019.7 - 2021.6

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Committee type：Academic society

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日本学術振興会卓越研究員候補者選考委員会書面審査員

2019.7 - 2021.6

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Committee type：Academic society

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Editorial Committee on "Connecting Rural and Urban Areas" Editor

2019.4

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Committee type：Other

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Agricultural Policy Platform Project, Food and Fertilizer Technology Research Center for the Asia and Pacific Region Contracted Partner

2014.4 - 2017.3

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Committee type：Other

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Agricultural Economics Society of Japan Director

2014.4 - 2016.3

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Committee type：Academic society

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Papers

Methodology for Policy Research : The Significance and Guidelines of Positivism-based Case Studies Invited

Takumi Sakuyama

Journal of Rural Economis 96 ( 2 ) 167 - 180 2024.9

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：日本農業経済学会

File： 96_167.pdf

DOI： 10.11472/nokei.96.167

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The political economy of agricultural trade liberalization in Northeast Asia: Comparisons with the West and between Japan and Korea Reviewed International journal

Wanki Moon, Takumi Sakuyama

The Pacific Review 36 ( 3 ) 1 - 31 2021.9

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：Informa UK Limited

File： The political economy of agricultural trade liberalization in Northeast Asia.pdf

DOI： 10.1080/09512748.2021.1977684

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Does the Japan-US Trade Agreement Violate the WTO Agreements?: Verification by Calculating True Tariff Elimination Ratios Based on the Japanese Government Criterion Reviewed

Takumi Sakuyama

Journal of Rural Economics 92 ( 4 ) 317 - 322 2021.3

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：日本農業経済学会

File：掲載稿.pdf

DOI： 10.11472/nokei.92.317

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The determinants of bilateral commitments in plurilateral FTAs : An analysis of Japan's tariff-rate quota selection in the TPP Agreement Reviewed

Journal of Japan Academy for International Trade and Business ( 55 ) 56 - 67 2018

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Bunshindo

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Were the Diet Resolutions Observed?: Verification of Japan's Commitments on Five Sensitive Agricultural Products in the Trans-Pacific Partnership Agreement Reviewed

SAKUYAMA Takumi

Journal of Rural Economics 88 ( 2 ) 206 - 211 2016.9

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Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Agricultural Economics Society of Japan

This paper aims to verify whether Japan's commitments in the Trans-Pacific Partnership Agreement are consistent with the Liberal Democratic Party's manifesto and the Diet resolutions. The former is defined as a request to exempt any agricultural product from tariff elimination, while the latter to exempt all five sensitive agricultural products from any commitment. The paper concludes from an analysis of Japan's tariff schedule that, whereas the manifesto is observed, the resolutions are not observed since the share of the five agricultural products exempted from any commitment is 26 and zero percent, respectively, based on a narrow and broad tariff classification.

File： J-Stage掲載.pdf

DOI： 10.11472/nokei.88.206

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The Determinants of Japan's Agricultural Liberalization in the TPP Agreement:An Investigation into the Roles of Negotiating Rules Invited Reviewed

SAKUYAMA Takumi

Journal of Food System Research 23 ( 2 ) 65 - 74 2016.9

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Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Food System Research Association of Japan

This article aims to reveal the roles of pre-determined negotiating rules, which condition Japan's agricultural liberalization commitments in the Trans-Pacific Partnership (TPP) Agreement. Specifically, it is hypothesized that the "setting of ex-ante tariff elimination ratio of 95 percent on a tariff line basis" as a cause of substantial progress in Japan's agricultural liberalization, and "assigning the rights to terminate negotiations to the preceding TPP participants" as a source of an early conclusion of the negotiations over Japan's agricultural products. The validity of the former hypothesis is proved by a qualitative analysis, which combines in-depth examination of non-official documents and the confirmation of correspondence between the expected and actual number of agricultural tariff lines in Japan's commitments. The latter hypothesis is supported by a quantitative analysis employing an ordered-probit regression model, which implies that Japan's meaningful concessions in agricultural products are limited to the preceding TPP participants who have the rights to terminate negotiations. This article contributes to the literature by not only indicating the existence of pre-determined rules in the TPP negotiations but also investigating the implications of those rules on the negotiation results through solid qualitative and quantitative analyses.

File：フードシステム研究.pdf

DOI： 10.5874/jfsr.23.2_65

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Japan's Quest for Food Export Disciplines in Trade Negotiations : A Critical Assessment of Its Economic Partnership Agreements Reviewed

Takumi Sakuyama

The Japanese Journal of Rural Economics 18 ( 0 ) 62 - 67 2016

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：The Agricultural Economics Society of Japan

File： Jpn. J. Rural Econ. Vol. 18. pp. 62-67. 2016.pdf

DOI： 10.18480/jjre.18.62

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Political Economy of Agricultural Trade Policy: A Review of the Literature and an Agenda for Future Research Invited Reviewed

SAKUYAMA Takumi

Journal of Rural Economics 87 ( 3 ) 199 - 211 2015.12

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Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Agricultural Economics Society of Japan

There is a sharp discrepancy between the traditional trade theory, which justifies free trade supplemented by direct payments, and the real world, in which tariff protection is a rule rather than an exception. This is particularly the case with Japan's agricultural trade policy. This paper identifies an agenda for future research in the political economy of trade policy that addresses such a gap by reviewing the literature to date in and outside Japan. The literature review shows that the relevant research is scarce in Japan but abundant abroad both in economics and political science. On the other hand, the study of the reason why tariffs are preferred over subsidies as a means of income transfer remains insufficient in terms of both theoretical and empirical research. Solving such a puzzle in collaboration with behavioral economics and political science is recommended.

File： sakuyama-2015.pdf

DOI： 10.11472/nokei.87.199

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Transparency and Public Perception of Agricultural Protection : Verification of the "Optimal Obfuscation Hypothesis" by the EU's Common Agricultural Policy Reviewed

Takumi Sakuyama

Journal of Rural Economics: Special Issue 2013 305 - 312 2013.12

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Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Agricultural Economics Society of Japan

File：論文集2013.pdf

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New Zealand^|^rsquo;s strategy to expand the Trans-Pacific Partnership Agreement:Theory and evidence of the ^|^lsquo;building block^|^rsquo; approach Reviewed

Takumi Sakuyama

KOKUSAI KEIZAI 64 ( 0 ) 125 - 145 2013.11

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Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society of International Economics

File： sakuyama-2013.pdf

DOI： 10.5652/kokusaikeizai.kk2013.03.t

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Determinants of Food Export Restrictions : An Empirical Investigation Using Probit Model Reviewed

SAKUYAMA Takumi

Journal of Rural Economics: Special Issue 2012 2012 317 - 324 2012.12

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Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Agricultural Economics Society of Japan

File：食料輸出規制（ヘッダーと頁入り）.pdf

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Factors Conditioning the Transition from Tariffs to Subsidies in Agricultural Protection : An Empirical Comparison between Switzerland and Japan Reviewed

SAKUYAMA Takumi

Journal of Rural Economics: Special Issue 2011 2011 211 - 218 2011.12

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Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Agricultural Economics Society of Japan

File： 2011農経論文集（抜刷）.pdf

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Factors Conditioning the Transition from Tariffs to Subsidies in Agricultural Protection : An Investigation by Measuring Economic Surplus of Stakeholders for Japan's Soybean Reviewed

SAKUYAMA Takumi

Journal of Rural Economics: Special Issue 2010 2010 252 - 259 2010.12

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Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Agricultural Economics Society of Japan

File：農経論文集投稿原稿（掲載版、頁入り）.pdf

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Determinants of Tariff Dependence in Agricultural Protection in Developed Countries: An Empirical Analysis using Panel Data Reviewed

Takumi SAKUYAMA

Studies in Regional Science 40 ( 3 ) 679 - 694 2010.12

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Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Section of the Regional Science Association International

File：掲載稿.pdf

DOI： 10.2457/srs.40.679

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A decade of debate over non-trade concerns and agricultural trade liberalisation: Convergences, remaining conflicts and a way forward Invited Reviewed

Takumi Sakuyama

International Journal of Agricultural Resources, Governance and Ecology 4 ( 3/4 ) 203 - 215 2005.7

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：Inderscience Publishers

The debate over non-trade concerns (NTC) and trade liberalisation for the past decade is reviewed and convergences and remaining conflicts are identified. It is found that, while the legitimacy of multifunctionality is no longer controversial and there is a convergence of the views on the best policy instrument for addressing NTC, divergent positions regarding the treatment of NTC in market access commitments still remain. It is concluded that the difference in views on the pace and sequence to arrive at targeted payment solution for non-trade objectives is a root cause. The article presents three justifications for gradual trade reform as a way to resolve the conflicts: the lack of information on the implications of trade liberalisation and the irreversible nature of non-commodity outputs, high initial transaction costs for designing targeted payments for non-commodity outputs, and the costs and time for shifting public finds to financing targeted green box payments.

File： 203_215.pdf

DOI： 10.1504/IJARGE.2005.007451

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Multifunctionality of agriculture in comparative perspective: Priorities and policy instruments in developed world Invited Reviewed

Takumi Sakuyama

Journal of Rural Planning Association 22 ( 1 ) 37 - 45 2003.6

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

File：農村計画学会誌(2003-6).pdf

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国際貿易ルールと日本の食料安全保障：食料輸出制限を中心に Invited

作山巧

農村と都市をむすぶ 76 ( 5 ) 36 - 44 2026.5

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

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令和の農政改革の政策過程 Invited

作山巧

農村と都市をむすぶ 75 ( 6 ) 14 - 19 2025.6

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File： 2025年6月号.pdf

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中山間地域等直接支払制度の誕生－農水省と財務省の攻防を中心に－ Invited

作山巧

農村と都市をむすぶ 75 ( 3 ) 47 - 62 2025.3

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File：農村と都市をむすぶ2025年3月号.pdf

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改正食料・農業・農村基本法の評価－参議院農林水産委員会での意見陳述から－ Invited

作山巧

農村と都市をむすぶ 74 ( 7 ) 9 - 17 2024.7

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File： 2024年7月号.pdf

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The Policy Process of the Revision of the Basic Act on Food, Agriculture and Rural Areas: The Transformation of Relationship between Bureaucrats and Politicians in Comparison with the Establishment of the Act Invited

Takumi Sakuyama

Connecting Rural and Urban Areas 74 ( 3 ) 6 - 11 2024.3

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File： ntosi202403_作山.pdf

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Increasing Risks and Uncertainties of Global Food Markets and Food System: Comments Invited

Takumi SAKUYAMA

Journal of Food System Research 30 ( 3 ) 178 - 179 2024.2

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Food System Research Association of Japan

File：学会誌掲載.pdf

DOI： 10.5874/jfsr.23.30.3_9

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Political Dynamics of the Revision of the Basic Act on Food, Agriculture and Rural Areas: A Comparison between the Abe Administration and the Kishida Administration Invited

Takumi Sakuyama

Connecting Rural and Urban Areas 73 ( 5 ) 51 - 56 2023.5

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File：作山巧_51-56.pdf

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Current Status and Issues concerning Submission and Review in the Journal of Rural Economics

Takumi Sakuyama

Journal of Rural Economics 94 ( 4 ) 275 - 276 2023.3

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Language：Japanese Publishing type：Research paper (other academic)

File： 2023_94_4_談話室_275-276.pdf

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農林水産物の輸出促進対策予算の検証―政策間の整合性を中心に― Invited

作山巧

農村と都市をむすぶ 72 ( 5 ) 51 - 58 2022.5

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File：農林水産物の輸出促進対策予算の検証.pdf

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Establishment of Export and International Bureau due to the organizational restructuring of Ministry of Agriculture, Forestry and Fisheries: History and evaluation- Invited

Takumi Sakuyama

Connecting Rural and Urban Areas 71 ( 7 ) 31 - 42 2021.7

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File：掲載稿.pdf

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Export promotion measures and budget for agriculture, forestry and fishery products: Evaluation of 1 trillion yen target and prospect of 5 trillion yen target Invited

Takumi Sakuyama

Connecting Rural and Urban Areas 71 ( 5 ) 16 - 26 2021.5

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File： 2021年5月号.pdf

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Merits and demerits of export-oriented agricultural policy: Evaluating the validity of the 5 trillion yen target

Takumi Sakuyama

Annual Report on Japanese Agriculture ( 66 ) 101 - 111 2021.5

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Language：Japanese Publishing type：Research paper (scientific journal)

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【研究会】安倍政権の農政を振り返る

農村と都市をむすぶ 71 ( 1 ) 2021.1

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File： ntosi202101.pdf

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Export promotion of agricultural, forestry and fishery products: Verifying the 5 trillion yen target that came to the front Invited

Takumi Sakuyama

Connecting Rural and Urban Areas 70 ( 6 ) 61 - 70 2020.6

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File：掲載版.pdf

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The Impact of Trade Agreements on Japan's Food Imports: A Case of Fresh Grape

Takumi Sakuyama

( 19 ) 3 - 3 2020.3

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Language：Japanese

File：掲載稿.pdf

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『ポスト貿易自由化』時代の貿易ルールに関する研究会 Invited

作山巧, 林正德, 谷口信和, 服部信司, 堀口健治, 神山安雄, 加瀬和俊, 小林信一, 安藤光義, 友田滋夫

農村と都市をむすぶ 70 ( 3 ) 4 - 45 2020.3

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Language：Japanese Publishing type：Research paper (conference, symposium, etc.) Publisher：全農林労働組合農村と都市をむすぶ編集部

File：農村と都市20年3月号.pdf

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日米貿易協定は日本の農と食に何をもたらすのか Invited

作山巧

農業と経済 86 ( 3 ) 25 - 33 2020.3

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Language：Japanese Publishing type：Research paper (scientific journal)

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メガFTAと日本農業の課題 : TPP、日欧EPA、日米FTAを中心に Invited

作山巧

農村と都市をむすぶ 69 ( 12 ) 40 - 47 2019.12

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution) Publisher：全農林労働組合農村と都市をむすぶ編集部

File：メガＦＴＡと日本農業の課題.pdf

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The evaluation of "Basic Plan" as a policy implementation tool Invited

Takumi Sakuyama

Connecting Rural and Urban Areas 69 ( 10 ) 23 - 27 2019.10

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File：政策推進手法としての「基本計画」の評価.pdf

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Annual Report on Food, Agriculture and Rural Areas in FY2018

Connecting Rural and Urban Areas 69 ( 8 ) 10 - 58 2019.8

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution)

File：農村と都市19年8月号.pdf

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Report of stay at the University of California, Davis Invited

Takumi Sakuyama

Quarterly Maiji ( 83 ) 48 - 49 2019.7

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Language：Japanese Publisher：Meiji University

File：掲載版.pdf

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Trends in international agricultural negotiations Invited

Takumi Sakuyama

Rural Development ( 820 ) 10 - 11 2018.4

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Language：Japanese Publishing type：Research paper (conference, symposium, etc.) Publisher：Japanese Society of Rural Development Engineers

File： 00-講演要旨-作山先生（最終版）.pdf

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TPP-11 Agreement excluding the US: Its backgrounds and evaluation Invited

Agriculture and Economy 84 ( 3 ) 61 - 68 2018.4

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Showado

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New development of regional integration and regionalismin in Latin America Invited

Aoyama Gakuho ( 262 ) 27 - 27 2017.12

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Language：Japanese Publisher：Aoyama Gakuin

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Research Front Line: Why is trade liberalization such as the TPP so difficult? Invited

Quarterly Meiji 76 36 - 37 2017.10

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Authorship：Lead author Language：Japanese Publishing type：Research paper (bulletin of university, research institution) Publisher：Meiji University

File： P40-41.pdf

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Pathway for realizing the RCEP: Lessons from the conclusion of the TPP negotiations Invited

Global Asia Review 5 5 - 6 2017.10

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Language：Japanese Publisher：International Academic Society for Asian Community

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INTERVIEW もう一つの道(vol.17)TPPからなにを知るべきか作山巧さん明治大学農学部准教授 Invited

作山巧

地上 = Good earth 71 ( 8 ) 40 - 43 2017.8

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Language：Japanese Publisher：家の光協会

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Book guide (Yamada, M. and Ishii, H. Secret Agreements that ruin Japan: Why was the TPP distorted?, Shinchosha, 2016) Reviewed

Agriculture and Economy 83 ( 3 ) 126 - 126 2017.3

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Language：Japanese Publisher：Shouwado

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Food, Agriculture and Japan's Strategy for the TPP Agreement Reviewed

Memoirs of Institute of Social Sciences, Meiji University 55 ( 2 ) 189 - 199 2017.3

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Language：Japanese Publishing type：Research paper (international conference proceedings) Publisher：Institute of Social Sciences, Meiji University

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パネルディスカッション日本における食と農の展望を考える (第30回社会科学研究所シンポジウム食料・農業のTPP戦略 : 日米韓の対応) Reviewed

作山巧, 東山寛, 榊田みどり, 小田切徳美

明治大学社会科学研究所紀要 55 ( 2 ) 228 - 248 2017.3

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Language：Japanese Publisher：明治大学社会科学研究所

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The withdrawal of the US from the Trans-Pacific Partnership Agreement and the prospect of mega FTA negotiations Invited

Agrio ( 141 ) 7 - 9 2017.1

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Language：Japanese Publisher：Jiji press

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Exploring the possibility of Japanese rice export: An inconvenient truth and a prescription for export expansion Invited

Takumi Sakuyama

Agriculture and Economy 82 ( 11 ) 52 - 57 2016.11

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Shouwado

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Issues in TPP : Reading Its Reality and Future in the Agreement : The Feasibility of Realizing "Offensive Agriculture" through the TPP Agreement Reviewed

Journal of the Japanese Institute of International Business Law 44 ( 10 ) 1515 - 1523 2016.10

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Institute of International Business Law

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Preconditions for Japan's participation in the TPP and negotiating strategy for agricultural products Invited

Agriculture and Economy 82 ( 6 ) 134 - 141 2016.6

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Shouwado

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Current state of and expansion strategies for agricultural exports: lessons from Europe's success Reviewed

Agriculture and Horticulture 71 ( 6 ) 12 - 16 2016.6

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Language：Japanese Publisher：Seibundo Shinkosha

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Three puzzles over the TPP negotiations: Strategies for institutional design and domestic politics read by a former negotiator Reviewed

World Economic Review 60 ( 2 ) 74 - 81 2016.3

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Institute for International Trade and Investment

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Negotiation history and pathway to the enactment of the TPP agreement Reviewed

Agriculture and Economy 82 ( 2 ) 5 - 12 2016.3

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Shouwado

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New Zealand as an architect of the TPP : Its motivation and strategy Invited

Takumi Sakuyama

Journal of New Zealand Studies in Japan 21 89 - 102 2015.3

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：New Zealand Studies Society in Japan

File：ニュージーランド研究.pdf

DOI： 10.60300/nzssj.21.0_89

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食料環境政策学科-食料貿易論研究室- Reviewed

作山巧

明治大学農学部研究報告 64 ( 3 ) 115 - 116 2015.2

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Authorship：Lead author Language：Japanese Publishing type：Research paper (bulletin of university, research institution) Publisher：明治大学農学部

File：研究室紹介.pdf

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Vitality Creation Plan of Agriculture, Forestry, Fisheries and Regions

FFTC Agricultural Policy Platform 2014.9

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Language：English Publisher：Food and Fertilizer Technology Center

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Political-economy of Japan's participation in the TPP negotiations Invited

Quarterly Meiji ( 59 ) 44 - 47 2013.7

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Authorship：Lead author Language：Japanese Publishing type：Research paper (bulletin of university, research institution) Publisher：Meiji University

File：季刊明治.pdf

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APEC ministerial meeting on food security: accomplishments and future challenges Invited

International cooperation of agriculture and foresty 33 ( 3 ) 28 - 36 2010.12

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Authorship：Lead author Language：Japanese Publishing type：Research paper (bulletin of university, research institution) Publisher：Japan Association for International Collaboration of Agriculture and Forestry

File： vol33_03.pdf

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The political economy of tariff protection: a review of literature on theoretical and empirical studies Reviewed

Sakuyama Takumi

The Aoyama journal of international politics, economics and communication 80 ( 80 ) 161 - 179 2010.1

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Authorship：Lead author Language：Japanese Publishing type：Research paper (bulletin of university, research institution) Publisher：Aoyama Gakuin University

File：国際政経論集.pdf

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What we learn from Swiss FTA strategy: Based on my experience in Japan-Switzerland EPA negotiations

Takumi Sakuyama

PRIMAFF Review 30 36 - 41 2009.1

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution) Publisher：Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

File： primaffreview2009-30-6.pdf

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Japan's international strategy for promoting the multifunctionality of agriculture: Accomplishments and remaining challenges

Takumi Sakuyama

PRIMAFF Review 25 16 - 19 2007.9

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Language：Japanese Publishing type：Research paper (bulletin of university, research institution) Publisher：Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

File： primaffreview2007-25-5.pdf

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The Roles of Agriculture in Development: The Policy Implications and Guidance, Research Programme Summary Report 2007

Takumi Sakuyama

1 - 27 2007.5

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Authorship：Lead author Language：English Publishing type：Research paper (other academic) Publisher：Food and Agriculture Organization of the United Nations

File： summary07.pdf

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The roles of agriculture in development: Findings, lessons and policy implications from a FAO project

Takumi Sakuyama

Roles of Agriculture Project: Project Brief 2 1 - 8 2007.3

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Language：English Publishing type：Research paper (other academic)

File： Project Brief No-2-2.pdf

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Diverse roles of agriculture in developing countries: Findings and lessons from a FAO Project Invited

World's Agriculture, Forestry and Fisheries ( 806 ) 9 - 14 2007

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Authorship：Lead author Language：Japanese Publishing type：Research paper (bulletin of university, research institution) Publisher：Japan Association for International Collaboration of Agriculture and Forestry

File： 07 - 2.pdf

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The roles of agriculture in economic and social development: Project approach and emerging lessons to date

Takumi Sakuyama

Roles of Agriculture Project: Project Brief 1 1 - 8 2006.6

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Language：English Publishing type：Research paper (other academic)

File： Project Brief No-1.0.pdf

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Direct payments for environmental services from mountain agriculture in Japan: Evaluating its effectiveness and drawing lessons for developing countries Reviewed

Takumi Sakuyama

electronic Journal of Agricultural and Development Economics 3 ( 1 ) 27 - 57 2006.5

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：Food and Agriculture Organization of the United Nations

This article evaluates the effectiveness of ex-post targeting of the direct payment program for mountain agriculture in Japan. A regression analysis explaining the entry into the program shows that the farm profitability and the production cost were significant 
positive and negative factor, respectively, in determining the uptake, while the efforts by local governments were a robust factor in facilitating the enrollment. These findings imply ineffective ex-post targeting and call for the differentiation of the premium, alternative incentives to promote forestation for the un-enrolled fields and additional funds targeted to those prefectures with the low uptake ratio. Lessons drawn from the Japanese experience for 
effective incentive measures in developing countries include the use of composite indicators in designating eligible areas to avoid the risk of insufficient targeting and the engagement of local governments to facilitate the entry through the reduction of transaction costs among participants.

File： ag073e00.pdf

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Economic valuation on environmental services from agriculture: Stocktaking for incentive design

Takumi Sakuyama, Randy Stringer

Roles of Agriculture Project: Policy Brief 1 1 - 8 2006.1

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Language：English Publishing type：Research paper (other academic)

File： bs521e.pdf

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Multifunctionality of agriculture: Determinants of different policy instruments in Japan and Europe Reviewed

Agriculture and Economy 68 ( 8 ) 109 - 120 2002.7

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Shouwado

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The rice price policy in East Asian countries: its goals and consequences Reviewed

Agriculture and Economy 63 ( 4 ) 74 - 80 1997.3

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Fumin Kyoukai

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Reform of and prospects for the Common Agricultural Policy of the European Communities: Analysis of the reforms during the 1980s and the Macsharry Proposal

Takumi Sakuyama

Proceedings of Dissertations by 45th Trainees for Economic Analysis and Policy Planning Course 45 ( 2 ) 1 - 41 1992.11

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Language：Japanese Publisher：National Research Institute of Agricultural Economics, Ministry of Agriculture, Forestry and Fisheries

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Abstract of the Agricultural Outlook 1992 Invited

Japan Grain Importers Association Journal ( 525 ) 1 - 9 1992.6

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Language：Japanese Publisher：Japan Grain Importers Association

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Abstract of the Annual Report on Agriculture 1990 Invited

National Agricultural Insurance Fund Monthly Report ( 457 ) 2 - 7 1991.5

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Language：Japanese Publisher：National Agricultural Insurance Fund

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Books

The Demise of Agricultural Iron Triangle and Agricultural Policy Reforms led by the Prime Minister’s Office: The Root Causes of TPP and Agricultural Cooperative Reform under the Abe/Suga Administration

Takumi Sakuyama（ Role： Sole author）

Association of Agricultural and Forestry Statistics 2021.9 （ ISBN:9784541043399 ）

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Total pages：vi, 125p Language：Japanese Book type：Scholarly book

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An Introduction to International Trade Rules for Food and Agriculture

Takumi Sakuyama（ Role： Sole author）

Shouwado 2019.10 （ ISBN:4812218284 ）

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Total pages：248 Language：Japanese Book type：Textbook, survey, introduction

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The Truth about Japan's Participation in the TPP Negotiations: Revealing its Policy Process

（ Role： Sole author）

Bunshindo 2015.10 （ ISBN:9784830948749 ）

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Total pages：xiv, 245p Language：Japanese Book type：Scholarly book

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International Negotiations over the Multifunctionality of Agriculture

Takumi Sakuyama（ Role： Sole author）

Tsukuba Shobo 2006.1 （ ISBN:4811902912 ）

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Total pages：163p Language：Japanese Book type：Scholarly book

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Handbook of Japanese Public Administration and Bureaucracy Reviewed

Takumi Sakuyama（ Role： ContributorMinistry of Agriculture, Forestry and Fisheries (MAFF)）

MHM Limited 2024.5 （ ISBN:9784909286246 ）

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Total pages：15 Responsible for pages：336-350 Language：English Book type：Scholarly book

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Trade Policy under the WTO Regime: Past, Present, and Future

Takumi Sakuyama（ Role： ContributorFree Trade and Japan's Food Security）

Bunshindo Publishing Corporation 2024.1 （ ISBN:4830952490 ）

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Total pages：238

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Sustainability and Environment, Food and Agriculture

Takumi Sakuyama（ Role： ContributorFood Trade and Sustainability: What does fair trade mean?）

Nihon Keizai Hyouronsha 2022.10 （ ISBN:9784818826212 ）

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Total pages：xiii, 278p Language：Japanese

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Japan Agricultural Yearbook 66: Does the New Basic Plan Look Ahead to the Covid-19 Era?

Takumi Sakuyama（ Role： ContributorMerits and demerits of export-oriented agricultural policy: Evaluating the validity of the 5 trillion yen target）

Agriculture and Forestry Statistics Association 2021.5 （ ISBN:9784541043276 ）

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Total pages：11 Responsible for pages：101-111 Language：Japanese

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Encyclopedia of Agricultural Economics

Takumi Sakuyama（ Role： ContributorTariffs and non-tariff measures in the world）

Maruzen Publishing 2019.11 （ ISBN:9784621304570 ）

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Total pages：2 Responsible for pages：566-567 Language：Japanese

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Encyclopedia of Agricultural Economics

Takumi Sakuyama（ Role： ContributorMultifunctionality of agriculture）

Maruzen Publishing 2019.11 （ ISBN:9784621304570 ）

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Total pages：2 Responsible for pages：334-335 Language：Japanese

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Opening the Way for East Asian Cooperation

Takumi Sakuyama（ Role： ContributorPathway for realizing the RCEP: Lessons from the conclusion of the TPP negotiations）

Kadensha 2017.9 （ ISBN:9784763408303 ）

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Total pages：12 Responsible for pages：64-75 Language：Japanese Book type：Scholarly book

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Trade Rules in the "Post-Trade Liberalization" Era: A Framework and Impact Analysis

Takumi Sakuyama（ Role： ContributorAn alternative approach to "trade liberalization": Making an interpretation of "trade liberalization" in the APEC）

Nourin Toukei Publishing 2015.12 （ ISBN:9784897323350 ）

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Responsible for pages：255-276 Language：Japanese

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Payment for Environmental Services in Agricultural Landscapes: Economic Policies and Poverty Reduction in Developing Countries

Leslie Lipper, Randy Stringer, David Zilberman（ Role： Edit）

Springer Science 2008.12 （ ISBN:9780387729695 ）

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Total pages：284 Language：English Book type：Scholarly book

In recent years, development policy has responded to an increasing concern about natural resource degradation by setting up innovative payment for environmental services (PES) programs in developing countries. PES programs use market and institutional incentives in order to meet both environmental and poverty alleviation objectives. However, their optimal design, implications for the rural poor, and how these initiatives integrate into international treaties on global warming and biodiversity loss are still being discussed. This book addresses these issues by scrutinizing analytical tools, providing policy insights and stimulating debate on linkages between poverty alleviation and environmental protection. In particular, it turns attention towards the role of environmental services in agricultural landscapes as they provide a living for many poor in developing countries. It serves as a valuable reference for academics and students in various disciplines, as well as for policy makers and advisors.

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The Roles of Agriculture in Developing Countries: Lessons from a FAO Project

Food and Agriculture Organization of, the, United, Nations（ Role： Edit）

Japan Association for International Collaboration of Agriculture and Forestry 2007.4

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Responsible for pages：1-214 Language：Japanese Book type：Scholarly book

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Multifunctionality: Towards an Analytical Framework

Nobunori Kuga, Jun Shobu, Toru Hisazome（ Role： Joint translator）

Rural Culture Association Japan 2001.9 （ ISBN:9784540010781 ）

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Total pages：196 Language：Japanese

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平成4年度農業観測

農林水産省（ Role： Contributor「海外農産物」（161-180頁））

農林水産省 1992.5

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平成2年度農業の動向に関する年次報告（農業白書）

農林水産省（ Role： Contributor「農業と比較生産性と農家の生活水準」（70-73頁）、「果実の需給動向」（131-134頁））

農林統計協会 1991.4

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MISC

国民にとって望ましい米政策のあり方：欧米に学ぶ直接支払いのメリット Invited

作山巧

季刊地域 66 68 - 73 2026.7

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)

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高市政権下における農政の帰趨：生産者に配慮したコスト指標と厳しい水田政策の見直しの真相 Invited

作山巧

ニューカントリー 867 34 - 35 2026.6

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：北海道協同組合通信社

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欧米に学ぶ合理的価格形成の在り方とは：直接支払いは所得増だけでなく価格低下による消費者の利益も Invited

作山巧

デーリィマン 76 ( 4 ) 19 - 19 2026.4

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：北海道協同組合通信社

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地経学時代の日本農業 Invited

作山巧

農林金融 79 ( 4 ) 58 - 59 2026.4

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：農林中央金庫

File： n2604dan.pdf

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米価格高騰の光と影：「令和の米騒動」を契機に米政策の改革を Invited

作山巧

地方議会人 56 ( 8 ) 36 - 38 2026.1

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)

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「減反政策」から「直接支払い」に Invited

作山巧

社会運動 461 18 - 27 2026.1

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)

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「令和の米騒動」でわかった価格転嫁の難しさ：今こそ直接支払い導入の好機

季刊地域 62 67 - 71 2025.8

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：農山漁村文化協会

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Calls on Prime Minister Ishiba to implement direct income compensation Invited

contemporary agriculture 104 ( 1 ) 263 - 265 2024.12

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Language：Japanese Publisher：Agricultural and Rural Culture Association

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研究者と行政官との協業による可能性と課題がみえる一冊：玉真之介・草苅仁・木村崇之編『農業基本法2.0から3.0へ―食料、農業、農村の多面的価値の実現に向けて』（筑波書房、2023年7月刊）

農業と経済 90 ( 3 ) 2024.9

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Language：Japanese Publisher：英明企画編集

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基本法見直し答申の矛盾とその解消案 : 農業者はもっと怒るべきではないか Invited

作山巧

季刊地域 56 67 - 71 2024.2

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：農山漁村文化協会

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Agricultural Crisis and the Issue of Price Pass-Through for Agricultural Products: Direct Payments Benefit Farmers and Consumers Invited

2520 5 - 5 2023.11

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Language：Japanese

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座談会食料・農業・農村基本法の見直しをめぐって

安藤光義, 作山巧, 神山安雄, 小林信一, 谷口信和, 服部信司, 堀口健治, 加瀬和俊, 矢坂雅充, 友田滋夫, 西川邦夫, 秋山満

農村と都市をむすぶ 73 ( 1 ) 18 - 52 2023.1

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Language：Japanese Publisher：東京 : 全農林労働組合農村と都市をむすぶ編集部

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Other Link： https://ndlsearch.ndl.go.jp/books/R000000004-I032649135
座談会地理的表示保護制度をめぐって

作山巧, 内藤恵久, 谷口信和, 安藤光義, 服部信司, 堀口健治, 矢坂雅充, 友田滋夫, 西川邦夫, 小林信一

農村と都市をむすぶ 72 ( 11 ) 4 - 55 2022.12

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Language：Japanese Publisher：東京 : 全農林労働組合農村と都市をむすぶ編集部

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Other Link： https://ndlsearch.ndl.go.jp/books/R000000004-I032584081
一票の格差是正で反映されにくくなる地方の声：参院定数を各県で同数にし「地域の代表」とするのも一案 Invited

作山巧

デーリィマン 72 ( 4 ) 19 - 19 2022.4

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：北海道協同組合通信社

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We read "Agriculture and Economy" like this: Linking Japanese food boom to the expansion of agricultural exports (Food Trade Seminar, Department of Agri-food and Environmental Policy, School of Agriculture, Meiji University ) Invited

Agriculture and Economy 83 ( 4 ) 84 - 85 2017.4

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Language：Japanese Publisher：Shouwado

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Presentations

日本の農林水産物輸出の決定要因：輸出関数と重力モデルによる実証研究 International conference

Takumi Sakuyama

The 11th International Conference 2023.3 Asian Society of Agricultural Economists

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Event date： 2023.3

Language：English Presentation type：Oral presentation (general)

Venue：Aoyama Gakuin University Country/Region：Japan

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The Political Economy of Agricultural Trade Policy in Northeast Asia: Comparisons with the West and between Japan and Korea

Wanki Moon, Takumi Sakuyama

International Conference of Agricultural Economists 2021.8

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Event date： 2021.8

Language：English Presentation type：Oral presentation (general)

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食料輸出制限における透明性の追求：世界貿易機関における通報義務の国別遵守状況 International conference

Takumi Sakuyama

XVIII Congress of the European Association of Agricultural Economists 2025.8 European Association of Agricultural Economists

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Language：English Presentation type：Oral presentation (general)

Venue：University of Bonn Country/Region：Germany

File： 20250207_sakuyama.pdf

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選挙制度と農業保護：日本のTPP協定参加の事例 International conference

Takumi Sakuyama

International Conference of Agricultural Economists 2018.8 International Association of Agricultural Economists

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Language：English Presentation type：Oral presentation (general)

Venue：Vancouver

This article aims to clarify the linkage between electoral rules and politicians' protectionist motives. Specifically, hypotheses on the positive impacts of the proportional representation formula and constituency size on candidates' attitudes toward the Trans-Pacific Partnership (TPP) are tested by estimating an ordered probit model using survey data on Japan's national elections in 2012, 2013, and 2016. By extending the coverage to the upper house elections, this article adds value to the previous literature. The estimation results confirm that proportional representation formula and constituency size have a positive impact on candidates' support for the TPP in the lower house election in 2012, but have no influence in the upper house elections in 2013 and 2016. Moreover, constituency size is no longer significant once the sample is limited to single-member district candidates even in the 2012 lower house election. It is therefore concluded that, contrary to the previous literature, constituency size that manifests electoral incentives is not a notable cause of candidates' protectionist bias. In contrast, it is found that candidates' political ideology, such as their affinity for

File： IAAE-2018.pdf

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TPP協定における日本の米に関する約束：米国の米産業は好機を逃したか？ International conference

Takumi Sakuyama

International Agricultural Trade Research Consortium Annual Meeting 2018.7 International Agricultural Trade Research Consortium

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Language：English Presentation type：Oral presentation (general)

Venue：Whistler, Canada

Japan made unprecedented concessions on rice market access in the Trans-Pacific Partnership (TPP) Agreement. It committed to establish the country-specific quotas (CSQs) for the US (70,000 t) and Australia (8,400 t), and to create a new category for medium-grain rice (60,000 t) in its existing WTO quota. Although this was the first-ever and only case of rice market opening in Japan's 17 FTAs to date, little attention is paid to it due to the subsequent US's withdrawal from the TPP. In light of the recent signing of the TPP-11 Agreement without the US and US's demand for a bilateral FTA with Japan however, Japan's rice concessions in the TPP is still worth to examine because these terms will serve as a starting point for the possible Japan-US negotiations over the former's rice market access. Against this background, this paper aims to assess impacts of Japan's rice commitments in the TPP on economic welfares both in Japan and the US.

The paper's main findings are twofold. First, it shows, based on the thorough examination of Japan's import records and TPP's negotiation process, that an additional export potential for US rice is 130,000 tons at maximum rather than 70,000 tons wit

File： sakuyama-IATRC2018.pdf

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令和の米騒動と輸入米：枠外輸入需要関数による実証

作山巧

2026年度日本フードシステム学会大会 2026.6 日本フードシステム学会

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Event date： 2026.6

Language：Japanese Presentation type：Oral presentation (general)

Venue：東京農業大学 Country/Region：Japan

File：作山巧.pdf

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わが国農業をめぐる環境変化と対応課題－「令和の米騒動」と米政策のあり方を中心に－ Invited

作山巧

第54回農協問題総合研究会 2025.7 一般社団法人農業開発研修センター

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Event date： 2025.7

Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：京都ＪＡビル Country/Region：Japan

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The State of Food Export Restrictions in Violation of the WTO Agreement and Recommendations for Strengthening Discipline

Takumi Sakuyama

2025 Annual Conference, Agricultural Economics Society of Japan 2025.3 Agricultural Economics Society of Japan

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Event date： 2025.3

Language：Japanese Presentation type：Symposium, workshop panel (nominated)

Venue：Nihon University Country/Region：Japan

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Food export restrictions in breach of WTO agreements

2024 Annual Meeting, Food System Research Association of Japan 2024.6 Food System Research Association of Japan

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Event date： 2024.6

Language：Japanese Presentation type：Oral presentation (general)

Venue：Kyushu University Country/Region：Japan

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Current Status and Problems of Export Control Discipline in International Trade Agreements: Focusing on Legal Aspects

63rd National Convention of Japan Academy for International Trade and Business 2024.5 Japan Academy for International Trade and Business

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Event date： 2024.5

Language：Japanese Presentation type：Oral presentation (general)

Venue：Kwansei Gakuin University Country/Region：Japan

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Research Design for Policy Studies: Focusing on the Significance and Methods of Qualitative Empirical Analysis Invited

100th Anniversary Special Symposium, Agricultural Economics Society of Japan 2024.3 Agricultural Economics Society of Japan

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Event date： 2024.3

Language：Japanese Presentation type：Symposium, workshop panel (nominated)

Venue：Tohoku University Country/Region：Japan

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Global Food Markets and Food Systems under Increasing Risk and Uncertainty: Comments Invited

Symposium of the 2023 Annual Meeting, Food System Research Association of Japan 2023.6 Food System Research Association of Japan

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Event date： 2023.6

Language：Japanese Presentation type：Symposium, workshop panel (nominated)

Venue：Meiji University, Ikuta Campus Country/Region：Japan

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The Law and Economics of Food Export Restrictions: Asymmetries in International Discipline and Implications for Japan’s Food Security

Takumi Sakuyama

62nd National Convention of Japan Academy for International Trade and Business 2023.5 Japan Academy for International Trade and Business

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Event date： 2023.5

Language：Japanese Presentation type：Oral presentation (general)

Venue：Japan External Trade Organization (JETRO) Country/Region：Japan

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The determinants of Japan's agricultural exports: An empirical investigation through the estimation of export and Gravity equations

Takumi Sakuyama

The 81th Annual Meeting of The Japan Society of International Economics 2022.10 The Japan Society of International Economics

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Event date： 2022.10

Language：Japanese Presentation type：Oral presentation (general)

Venue：Faculty of Economics, Kindai University Country/Region：Japan

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Empirical analysis of the determinants of Japan's agricultural exports

Takumi Sakuyama

61st National Convention of Japan Academy for International Trade and Business 2022.6 Japan Academy for International Trade and Business

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Event date： 2022.6

Language：Japanese Presentation type：Oral presentation (general)

Venue：Toyama University Country/Region：Japan

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農畜産物の適正価格実現に向けて Invited

作山巧

あづみ農協農政協議会「あぐりセミナー」 2026.6 あづみ農業協同組合

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：安曇野スイス村サンモリッツ中ホール Country/Region：Japan

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トランプ関税と日本の交渉戦略 Invited

作山巧

全農林第４回農政学習会 2026.6 全農林労働組合

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：参議院議員会館 Country/Region：Japan

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食料輸出規制の規律強化に向けて－WTO協定に関する考察と提言－ Invited

作山巧

食料の輸出制限的措置が世界の食料需給・貿易構造、フードセキュリティに与える影響 2026.5 農林水産政策研究所

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：農林水産政策研究所 Country/Region：Japan

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地経学時代の日本農業 Invited

作山巧

農協愛友会第68回通常総会及び協同組合懇話会合同記念講演会 2026.5 農協愛友会・協同組合懇話会

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：東京會舘スタールーム Country/Region：Japan

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高市政権下の農政の展望 Invited

作山巧

ＪＡ松本ハイランド農政協議会 2026.4 松本ハイランド農業協同組合

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：グリンパル Country/Region：Japan

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適正価格をどう実現するか？－令和の米騒動と直接支払い－ Invited

作山巧

水田政策とお米の価格問題を考える学習会 2026.4 生活クラブ事業連合生活協同組合連合会、パルシステム生活協同組合連合会、東都生活協同組合、生活協同組合連合会アイチョイス、生活協同組合連合会コープ自然派・オレンジコープ事業連合、グリーンコープ生活協同組合連合会

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：TKPガーデンシティPREMIUM品川HEART Country/Region：Japan

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インバウンドは日本の農産物輸出を増やすか：操作変数法による重力方程式の推計を通じた検証

作山巧

2026年度日本農業経済学会大会 2026.3 日本農業経済学会

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Language：Japanese Presentation type：Oral presentation (general)

Venue：鳥取大学 Country/Region：Japan

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トランプ関税の問題点と国際貿易体制の展望 Invited

作山巧

『農村と都市をむすぶ』研究会 2025.12

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

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トランプ関税の問題点と日本農業への影響 Invited

作山巧

農政ジャーナリストの会研究会 2025.11

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

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基本法改正後の農業政策の展望～米政策と直接支払いを中心に～

作山巧

岩手県農業委員会大会特別研修会 2025.11

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

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令和の米騒動の真実 Invited

作山巧

成田社会人大学（明治大学フィールドワーク特別講演） 2025.10

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

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日本の農林水産物輸出額の決定要因：操作変数法による重力方程式の推計

作山巧

日本国際経済学会第84回全国大会 2025.10 日本国際経済学会

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Language：Japanese Presentation type：Oral presentation (general)

Venue：中央大学（多摩キャンパス） Country/Region：Japan

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インバウンドは日本の食料輸出を増やすか－構造方程式モデリングによる重力方程式の推計を通じた検証－

作山巧

2025年度学会大会 2025.6 日本フードシステム学会

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Language：Japanese Presentation type：Oral presentation (general)

Venue：東京海洋大学 Country/Region：Japan

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日本の食料・農業政策の展望－米価高騰とトランプ関税を中心に－ Invited

作山巧

衆議院議員階猛107回朝食会 2025.6 階猛事務所

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：KKRホテル東京 Country/Region：Japan

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インバウンドは日本の食料輸出を増やすか－構造方程式モデリングによる重力方程式の推計を通じた検証－

作山巧

2025年度第2回研究報告会 2025.5 日本国際経済学会関東支部

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Language：Japanese Presentation type：Oral presentation (general)

Venue：日本大学経済学部 Country/Region：Japan

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The Verification of Compliance with WTO Notification Obligations: A Case of Food Export Restrictions International conference

作山巧

64th National Convention of Japan Academy for International Trade and Business 2025.5 Japan Academy for Foreign Trade and Business

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Language：Japanese Presentation type：Oral presentation (general)

Venue：College of Economics, Nihon University Country/Region：Japan

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Challenges for agricultural policy for the future: Focusing on Japan-U.S. negotiations and price price pass-through Invited

2025.5 Japan Agricultural News

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Japan Agricultural News Headquarters Country/Region：Japan

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Designing Direct Payments for Agriculture: Toward Coexistence of Producers and Consumers

2025.3 Constitutional Democratic Party

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Country/Region：Japan

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Evaluation and problems of the Revised Basic Law and Basic Plan: Focusing on the Price Formation Issue Invited

2025.1

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Country/Region：Japan

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Prospects for Agricultural Policy after the House of Representatives Election Invited

Agricultural Policy Seminer 2024.11 Hokkaido Farmers' Federation

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Language：Japanese Presentation type：Oral presentation (invited, special)

Country/Region：Japan

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Agricultural Economics and International Issues Invited

2024.11 Department of Agricultural Economics, Faculty of Agriculture, Hokkaido University

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Hokkaido University Country/Region：Japan

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Possibilities and Challenges of Introducing Direct Payments in Japan Invited

2024.10 Agricultural Policy Research Committee

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Meeting room, Nippon Agricultural Research Institute Country/Region：Japan

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Issues in the Proposed Amendment to the Basic Act on Food, Agriculture and Rural Areas: Focusing on Price Formation

Agricultural Policy Study Group 2024.3 Ministry of Agriculture, Forestry and Fisheries Labor Union

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：House of Representatives caucus hall Country/Region：Japan

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The Revision of the Food, Agriculture and Rural Areas Basic Act and Future Prospects Invited

Conference of Representatives of the National Branch of the Zen-Norin Labor Union 2024.2 Zen-Nourin Labor Union

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Rengo Kaikan Country/Region：Japan

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International Debate on Food Security: In Light of the War in Ukraine

Lecture commissioned by the National Diet Library 2023.7 National Diet Library

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Country/Region：Japan

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Review of the Basic Law and Food Security: Perspectives of a MAFF Formulation Member Invited

Takumi Sakuyama

Agricultural Policy Study Group 2023.3 Ministry of Agriculture, Forestry and Fisheries Labor Union

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：House of Councillors caucus hall Country/Region：Japan

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The Future of Japan's Food Security Invited

Takumi Sakuyama

2022 Morioka City Municipal Government Study Group Workshop 2023.2 Morioka City Municipal Government Study Group

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Morioka City, Iwate Prefecture Country/Region：Japan

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Verification of the Basic Act on Food, Agriculture and Rural Areas: Focusing on the Basic Plan and Self-sufficiency Targets Invited

Takumi Sakuyama

round-table discussion 2022.11 Association for Agriculture and Forestry Administration

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Ministry of Agriculture, Forestry and Fisheries Country/Region：Japan

File： ntosi202301.pdf

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Thinking about Future Agricultural Policy: Scenario of Desired Agricultural Policy- Invited

Takumi Sakuyama

Study session 2022.8 Sendai Branch, Ministry of Agriculture, Forestry and Fisheries Labor Union

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Country/Region：Japan

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Food security and food self-sufficiency Invited

Takumi Sakuyama

Agricultural policy study group 2022.4 Ministry of Agriculture, Forestry and Fisheries Labor Union

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Country/Region：Japan

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Economic Analysis of Agricultural Exports: Factors and Effects of Increased Exports Invited

Takumi Sakuyama

Export promotion caravan Kinki 2022.3 Kinki Regional Agricultural Administration Office, Ministry of Agriculture, Forestry and Fisheries

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Campus Plaza Kyoto Country/Region：Japan

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Current status of and challenges for the promotion policy for agricultural exports Invited

Takumi Sakuyama

National Diet Library 2022.2

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

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From the frontline of international trade negotiations Invited

Takumi Sakuyama

2022.2

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Country/Region：Japan

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The Truth and Prospects of Prime Minister's Office-led Agricultural Policy: Focusing on TPP and Agricultural Cooperative Reform Invited

Takumi Sakuyama

Agricultural comprehensive workshop 2021.12 Tomakomai Wide Area Agricultural Cooperative

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Atsuma Town General Welfare Center Country/Region：Japan

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Agricultural policy reform led by the Prime Minister's Office and the future of agricultural trade issues Invited

Takumi Sakuyama

2021.9

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Country/Region：Japan

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Current status and prospects of food trade and trade agreements Invited

Takumi Sakuyama

Agricultural policy workshop 2021.7 Kitami District Farmers' Federation

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Online Country/Region：Japan

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Problems of international trade negotiations and future direction of JA Group Aomori Invited

Takumi Sakuyama

2021.3

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Country/Region：Japan

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Free trade and Japan's agricultural and food policy Invited

Takumi Sakuyama

Sakura City International Culture University Lecture 2020.12 Sakura International Exchange Foundation

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Sakura City Central Community Center

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Prospects for food, agriculture and rural policies under the Suga administration Invited

Takumi Sakuyama

Commemorative lecture 2020.11 Miyagi Prefectural Council for Creating Food, Greenery, and Water

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

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安倍農政の問題点と新たな方向 Invited

作山巧

安倍農政検証ワーキングチーム 2020.7 共同会派農林水産部会

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：参議院議員会館

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Does the Japan-US Trade Agreement violate the WTO Agreements?: The verification of tariff elimination ratios excluding automobiles/auto-parts and duty-free items

Takumi Sakuyama

2020 Annual Conference, Agricultural Economics Society of Japan 2020.3 Agricultural Economics Society of Japan

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Tohoku University

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Evaluation and future prospects of the Japan-US Trade Agreement Invited

Takumi Sakuyama

2019.12

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

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Evaluation of Japan-US Trade Agreement: Is “Win-Win” Real?

Takumi Sakuyama

East-West Joint Session of Japan Academy for International Trade and Business 2019.11 Japan Academy for International Trade and Business

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Nihon University

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President Trump and Japan-US trade negotiations Invited

Takumi Sakuyama

2019.11

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

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環太平洋パートナーシップ（TPP）における日本の農業約束：教訓と課題 Invited

Takumi Sakuyama

International exchange lecture 2019.8 National Chung Hsing University

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Language：English Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：National Chung Hsing University

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Quantitative evaluation of rice import quota expansion in the Japan-US FTA: An economic surplus analysis

Takumi Sakuyama

2019 Annual Conference, Food System Research Association of Japan 2019.6 Food System Research Association of Japan

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Miyagi University

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Trade diversion effects in the Japan-Australia EPA: The ex-post analysis of fresh fruits

Takumi Sakuyama

58th National Convention of Japan Academy for International Trade and Business 2019.5 Japan Academy for International Trade and Business

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Matsuyama University

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Trade war triggered by the President Trump and trade policy research Invited

Takumi Sakuyama

University of Calfornia Davis Seminar 2018.11 Japanese San Francisco Bay Area Seminar

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：University of Calfornia, Davis

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Electoral rules and agricultural protectionism: The case of Japan's participation in the Trans-Pacific Partnership Agreement

Takumi Sakuyama

Agricultural Economics Workshop 2018.10 Department of Agricultural and Resource Economics

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Language：English Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：University of California, Davis

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The Overview of TPP-11 Agreement and issues for the Diet Invited

Takumi Sakuyama

Agriculture, Forestry and Fisheries Policy Conference 2018.3 Ms. Yasue Funayama, Member of the House of Councilors

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：House of Councilors' Members Hall

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The State of International Negotiations on Agriculture Invited

Takumi Sakuyama

2017 Tokyo Forum (Rural Promotion Workshop) 2018.2 Japanese Society of Rural Development Engineers, Japanese Society of Irrigation, Drainage and Rural Engineering

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Language：Japanese Presentation type：Oral presentation (invited, special)

Venue：Science Hall, Japan Science Foundation

File： 00-講演要旨-作山先生（最終版）.pdf

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University life for international organizations

Takumi Sakuyama

Lecture by Dr. Daniel Gustafson, Deputy Director-General of the Food and Agriculture Organization of the United Nations 2018.1 Meiji University and Food and Agriculture Organization of the United Nations

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：SurugadaiCampus, Meiji University

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Electoral rules and protectionist motives:The case of Japan's participation in the Trans-Pacific Partnership Agreement

Takumi Sakuyama

21st Annual Conference of the Japan Public Choice Society 2017.11 Japan Public Choice Society

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Kwansei Gakuin University

This article aims to contribute to the emerging literature on the linkage between electoral rules and politicians' preferences for protectionism. Specifically, the two hypotheses on the positive impacts of the proportional representation formula and the broadness of constituency size on candidates' support for freer trade are tested through the estimation of econometric models using candidates' response to pre-election surveys on Japan's participation in the Trans-Pacific Partnership Agreement for the lower house election in 2012 and the upper house elections in 2013 and 2016. By extending the coverage to the upper house elections in 2013 and 2016, this article adds value to the previous literature. First, although the proportional representation formula has indeed positive impacts on the candidates' attitudes toward the TPP in the lower house election in 2012, this does not necessarily mean that constituency size is the source for this difference. Second, the share of agricultural and manufacturing workers in each constituency affects candidates' preferences for the TPP in the lower house election but not in the upper house elections. Third, candidates' political ideology plays an important role in determining their attitudes toward the TPP across houses and elections.

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From RCEP to Asain Regional Integration Invited

Takumi Sakuyama

Autumn Conference, International Academic Society for Asian Community 2017.9 International Academic Society for Asian Community

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Language：Japanese Presentation type：Symposium, workshop panel (nominated)

Venue：Rikkyo University

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Pathway for realizing the RCEP: Lessons from the conclusion of the TPP negotiations

Takumi Sakuyama

Spring Conference, International Academic Society for Asian Community 2017.6 International Academic Society for Asian Community

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Rikkyo University

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Environment, Food and Energy Policies in Asia under the Trump Era

Takumi Sakuyama

Spring Conference, International Academic Society for Asian Community 2017.6 International Academic Society for Asian Community

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Language：Japanese Presentation type：Symposium, workshop panel (nominated)

Venue：Rikkyo University

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The determinants of bilateral commitments in the TPP Agreement: An analysis of Japan's tariff-rate quotas

Takumi Sakuyama

57th National Convention of Japan Academy for International Trade and Business 2017.5 Japan Academy for International Trade and Business

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Aichi Gakuin University

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The prospect of trade negotiations in the post-TPP era Invited

Takumi Sakuyama

Agriculture Promotion Congress, Iwate Central Agricultural Cooperatives 2017.1 Iwate Central Agricultural Cooperatives

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Hotel Senshukaku, Hanamaki Onsen

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The prospect of trade negotiations and agricultural policies in the post-TPP era Invited

Takumi Sakuyama

Agriculture and rural revitaliztion course, Tendou City, Yamagata Prefecture 2016.12 Tendou municipal office, Yamagata Prefecture

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Tendou City, Yamagata Prefecture

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The truth about the TPP and the future of Japanese agriculture Invited

Takumi Sakuyama

Research meeting on the TPP and agricultural policy 2016.11

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Tokyo Labor Hall

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Food, Agriculture and Japan's Strategy for the TPP Agreement Invited

Takumi Sakuyama

Food, Agriculture and Strategy for the TPP Agreement in Japan, US and Korea 2016.11 Institute of Social Sciences, Meiji University

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Surugadai Campus, Meiji University

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Determinants of Japan's Agricultural Commitments in the TPP and Their Impacts on Food System Invited

Takumi Sakuyama

2016 Annual Conference, Food System Research Association of Japan 2016.6 Food System Research Association of Japan

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Language：Japanese Presentation type：Oral presentation (keynote)

Venue：Tokyo University of Marine Science and Technology

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An empirical analysis of Japan's agricultural liberalization in the TPP Agreement

Takumi Sakuyama

56th National Convention of Japan Academy for International Trade and Business 2016.5 Japan Academy for International Trade and Business

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Meikai University

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Was the Diet resolution defended?: Verification of 5 sensitive products in the TPP Agreement

Takumi Sakuyama

2016 Annual Conference, Agricultural Economics Society of Japan 2016.3 Agricultural Economics Society of Japan

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Akita Prefectural University

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Interpretation of the TPP agreement and countermeasures in agriculture Invited

Takumi Sakuyama

Policy Research Council Meeting 2016.2 Iwate Prefecture Towns and Villages Association

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Iwate Prefecture Autonomy Hall

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Disciplines on food export restrictions in Japan's EPAs: A critical assessment of the Food Supply Chapter in the Japan-Australia EPA

Takumi Sakuyama

74th Annual Conference, Japan Society of International Economics 2015.11 Japan Society of International Economics

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Senshu University, Kawasaki, Japan

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TPP大筋合意の影響と国内対策について

作山巧

TPP協定大筋合意に関する対策検討会 2015.10 全国町村会

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：全国町村会館

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TPP and Japan's Food and Agriculture Invited

Takumi Sakuyama

6th Open Seminar 2015.10 Japan Association of Milk Packaging and Machinery

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Tokyo Conference Center Shinagawa

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New Zealand's strategies embedded in the TPP Invited

Takumi Sakuyama

22nd Research conference, Japan Society for New Zealand Studies 2015.7 Japan Society for New Zealand Studies

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Language：Japanese Presentation type：Oral presentation (invited, special)

Venue：Tokiwa University, Ibaraki Prefecture

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Policy process of Japan's participation to the TPP negotiations: Making a comparison between DPJ and LPD

Takumi Sakuyama

55th National Convention of Japan Academy for International Trade and Business 2015.5 Japan Academy for International Trade and Business

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Kyushu International University

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ＴＰＰと日本農業 Invited

Takumi Sakuyama

20th Japanese-German Symposium: Agriculture and Food Supply - Challenges and Perspectives 2015.5 Japan Society for the Promotion of Science Bonn Office and German JSPS Alumni Association

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Language：English Presentation type：Oral presentation (invited, special)

Venue：Potsdam University, Germany

A Trans-Pacific Partnership (TPP) agreement is currently under negotiation to create a trading bloc among 12 countries in the Asia-Pacific. While its participants were initially New Zealand, Singapore, Chile and Brunei, they expanded subsequently to include the United States and Japan. A TPP seeks to be a '21st century trade agreement' with elimination of tariffs and comprehensive rules on goods, services and intellectual property, but it generates controversy in existing and potential entrants in the negotiations. Against this background, my presentation addresses the following questions: (i) why has the TPP succeeded in expanding despite the fact that its original members were all tiny countries? (ii) why is the participation to the TPP negotiations so controversial not only in Japan but also other countries? (iii) what will be the impacts of tariff elimination on Japanese food and agriculture under the TPP? (iv) what will be the prospect of concluding negotiations in the near term?

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Japan's Quest for Tighter Disciplines on Food Export Restrictions in Trade Negotiations: A Critical Evaluation of the Japan-Australia EPA

Takumi Sakuyama

2015 Annual Conference, Agricultural Economics Society of Japan 2015.3 Agricultural Economics Society of Japan

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Language：English Presentation type：Oral presentation (general)

Venue：Tokyo University of Agriculture and Technology

This paper aims to evaluate as to whether Japan's quest for tighter disciplines on food export restrictions in trade negotiations is successful by taking the Japan-Australia Economic Partnership Agreement (JAEPA) as a case in point. The answer is "no" since a "best endeavor" clause not to institute food export restrictions in the JAEPA are weaker than Japan's proposals in the WTO and similar provisions in the regional trade agreements concluded by European countries. Japan's real objectives of demanding tighter disciplines were not to secure stable imports but to contain exporting countries externally and to sell politicians unpopular trade agreements internally.

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The evolution of trade liberalization methods in the APEC: 25 years of struggle between voluntarism and binding commitments

Takumi Sakuyama

2014 Study Group of Global Framework Formation and International Negotiations on Agriculture and Food 2015.2 Waseda University Organization for Japan-US Studies

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Waseda University Okuma Hall

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New Zealand as an architect of the TPP: Its motivation and strategy Invited

Takumi Sakuyama

2014 Research Conference, New Zealand Studies Society of Japan 2014.12 New Zealand Studies Society of Japan

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Language：Japanese Presentation type：Oral presentation (invited, special)

Venue：Bukkyo University, Kyoto

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TPPと日本の食料・農業－日米協議とゲーム理論－ Invited

作山巧

高大連携講座 2014.10 明治大学付属明治高校

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：明治大学付属明治高校

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International situations surrounding Japanese agriculture: TPP and agricultural exports Invited

Takumi Sakuyama

Dojin Club Seminar 2014.7 Dojin Club

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

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APEC: Transformation from "open regionalism" to "closed regionalism" Invited

Takumi Sakuyama

Study Group of Global Framework Formation and International Negotiations on Agriculture and Food, FY 2014 2014.7 Waseda University Organization for Japan-US Studies

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Waseda University Okuma Hall

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Changing nature of APEC as a catalyst for TPP: An application of the "regime interplay" concept

Takumi Sakuyama

54th National Convention of Japan Academy for International Trade and Business 2014.6 Japan Academy for International Trade and Business

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Wako University

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Factor Endowment, Comparative Advantage and Food Self-Sufficiency Ratio: An Empirical Analysis using Panel Data of Developed Countries

Takumi Sakuyama

2014 Annual Conference, Agricultural Economics Society of Japan 2014.3 Agricultural Economics Society of Japan

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Kobe University

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Exports of Japan's agricultural products Invited

Takumi Sakuyama

Guest Speaker Series 2014.2 International University of Japan and Minami-uonuma City Office

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Minami-uonuma City Hall

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The possibility of trade liberalization through the "building-block" approach: Lessons from the expansion process of the TPP

Takumi Sakuyama

Study Group of Global Framework Formation and International Negotiations on Agriculture and Food, FY 2013 2013.7 Waseda University Organization for Japan-US Studies

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Waseda University Okuma Hall

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Transparency and Public Perception of Agricultural Protection: Verification of the "Optimal Obfuscation Hypothesis" by the EU's Common Agricultural Policy

Takumi Sakuyama

2013 Annual Conference, Agricultural Economics Society of Japan 2013.3 Agricultural Economics Society of Japan

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Tokyo University of Agriculture

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Factors Facilitating Japan's Economic Partnership Agreements: The Role of Cross-sector Reciprocity in Market Access Negotiations

71th Annual Conference, Japan Society of International Economics 2012.10 Japan Society of International Economics

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Konan University, Kobe, Japan

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On the Trans-Pacific Partnership Agreement

Government briefing on TPP 2012.4 Aomori Prefectural Government

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Aomori Town Hall

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Determinants of food export restrictions: An empirical investigation using probit model

2012 Annual Conference, Agricultural Economics Society of Japan 2012.3 Agricultural Economics Society of Japan

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Kyushu University

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On the Trans-Pacific Partnership Agreement

Government briefing on TPP 2012.3 Yamagata Prefectural Government

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Yamagata Prefecture Advanced Technology Development Research Center

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Evaluation of multifunctionality and its application to policy: Lessons from the FAO project

Study group for developing evaluation methods of multifunctionality that focuses on various socio-economic roles of agriculture and rural areas 2011.10 Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

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Determinants of tariff dependence in Japan's agricultural protection: An empirical investigation using panel-data

Takumi Sakuyama

2010 Kanto Branch Conference, Japan Society of International Economics 2010.7 Japan Society of International Economics

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Rikkyo University

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Factors Conditioning the Transition from Border Measures to Subsidies in Agricultural Protection: Case Studies on Soybean and Beef in Japan

Takumi Sakuyama

2010 Annual Conference, Agricultural Economics Society of Japan 2010.3 Agricultural Economics Society of Japan

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Language：Japanese Presentation type：Oral presentation (general)

Venue：Kyoto University

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Determinants of Tariff Dependency in Agricultural Protection in Developed Countries: A Panel Data Analysis based on the Political-economy Approach

Takumi Sakuyama

46th Annual Meeting, Japan Section of the Regional Science Association International 2009.10 Hiroshima University

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Language：Japanese Presentation type：Oral presentation (general)

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FAO's Report on the State of Food and Agricutlture 2007: Paying Farmers for Environmental Services

Takumi Sakuyama

Policy Research Institute Seminar 2007.12 Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

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The roles of agriculture in the 21st century: Findings and lessons from ROA Project

Takumi Sakuyama

Roles of Agriculture in 21st Century 2007.2 Faculty of Horticulture, Chiba University

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Language：English Presentation type：Oral presentation (invited, special)

Venue：Matsudo, Chiba, Japan

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Environmental service incentives in conformity with poverty alleviation: Policy implications and guidance from FAO's Roles of Agriculture Project

Takumi Sakuyama

Policy Research Institute Special Seminar 2007.2 Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

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Environmental service incentives in conformity with poverty alleviation: Theory, practice and policy guidance from FAO's Roles of Agriculture Project Invited

Takumi Sakuyama

Seminar on Socio-economic Roles of Agriculture in Asia with Emphasis on Agri-environmental Services 2007.2 Asian Productivity Organization

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Language：English Presentation type：Oral presentation (general)

Venue：Linden Suite Hotel, Manila, Philippines

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Roles of agriculture in developing countries: Concept, findings and lessons from FAO's Roles of Agriculture Project Invited

Takumi Sakuyama

Seminar on Socio-economic Roles of Agriculture in Asia with Emphasis on Agri-environmental Services 2007.2 Asian Productivity Organization

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Language：English Presentation type：Oral presentation (general)

Venue：Linden Suite Hotel, Manila, Philippines

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Environmental service incentives: Policy implications and guidance

Takumi Sakuyama

Roles of Agriculture Project Final Workshop 2006.12 Food and Agriculture Organization of the United Nations

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Language：English Presentation type：Oral presentation (general)

Venue：Rome, Italy

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Environmental service incentives in the ROA Project: Overview

Takumi Sakuyama

Roles of Agriculture Project Final Workshop 2006.12 Food and Agriculture Organization of the United Nations

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Language：English Presentation type：Oral presentation (general)

Venue：Rome, Italy

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Roles of Agriculture Project: Achievements and ongoing work

Takumi Sakuyama

Sustainable Agricultural and Rural Development Seminar 2006.6 Food and Agriculture Organization of the United Nations

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Language：English Presentation type：Oral presentation (general)

Venue：Rome, Italy

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International situation and research trends over the multifunctionality of agriculture

Takumi Sakuyama

Workshop on educational functions of agriculture 2006.1 Faculty of Horticulture, Chiba University

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Language：Japanese Presentation type：Oral presentation (general)

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Incentive measures for environmental services from agriculture: Emerging lessons from the ROA Project

Takumi Sakuyama

3rd ASEAN+3 Seminar on Multifunctionality of Agriculture 2006.1 Japan's Ministry of Agriculture, Forestry and Fisheries

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Language：English Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：JICA Institute for International Cooperation, Tokyo, Japan

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International negotiations over the multifunctionality of agriculture

Takumi Sakuyama

WTO Research Center Seminar (Aoyama Gakuin University) 2006.1 WTO Research Center, Aoyama Gakuin University

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Language：Japanese Presentation type：Oral presentation (invited, special)

Venue：WTO Research Center, Aoyama Gakuin University

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Environmental service incentive work in the ROA Project: Overvie

Takumi Sakuyama

Workshop on Environmental Services for Poverty Reduction and Food Security 2005.5 Food and Agriculture Organization of the United Nations

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Language：English Presentation type：Oral presentation (general)

Venue：Rome, Italy

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Roles of Agriculture Project: Incentive measures for environmental services from agriculture Invited

Takumi Sakuyama

Special Seminar, Policy Research Institute 2005.2 Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

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Language：English Presentation type：Oral presentation (general)

Venue：Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

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Incentive measures for environmental services: Roles of Agriculture Project

Takumi Sakuyama

FAO/Netherlands Conference on Water for Food and Ecosystems 2005.2 Food and Agriculture Organization of the United Nations

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Language：English Presentation type：Oral presentation (general)

Venue：Netherlands Congress Centre, The Hague, Netherlands

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Environmental service incentives: Some conceptual issues

Takumi Sakuyama

3rd IUCN World Conservation Congress 2004.11 International Union for Conservation of Nature and Natural Resources

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Language：English Presentation type：Oral presentation (invited, special)

Venue：Queen Sirikit National Convention Centre, Bangkok, Thailand

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Roles of Agriculture Project

Takumi Sakuyama

Second Meeting of the Adelboden Group 2004.10 Food and Agriculture Organization of the United Nations

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Language：English Presentation type：Oral presentation (invited, special)

Venue：Rome, Italy

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Positions of developing countries in the WTO agriculture negotiations

Takumi Sakuyama

Policy Research Institute Internal Seminar 2004.1 Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

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Multifunctionality of agriculture and the WTO agriculture negotiations Invited

Takumi Sakuyama

WTO Project Study Group 2002.8 WTO Research Center, Aoyama Gakuin University

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Language：Japanese Presentation type：Oral presentation (invited, special)

Venue：Aoyama Gakuin University

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Multifunctionality of agriculture: A Japanese perspective Invited

Takumi Sakuyama

Working Group Meeting on Multifunctionality of Agriculture 2000.9 Club Demeter (Study group by French agricultural and food industry)

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Language：English Presentation type：Oral presentation (general)

Venue：Paris, France.

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Japan's agricultural policy reform Invited

Takumi Sakuyama

Agricultural attaché luncheon meeting 1998.6 British Embassy

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Language：English Presentation type：Oral presentation (general)

Venue：Tokyo, Japan.

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Rural development policies for Japan's Hilly and Mountainous Areas Invited

Takumi Sakuyama

Seminar on Development of Rural Areas with Special Regard to Less Advanced Regions 1998.1 Japanese-German Centre, Berlin, Germany

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Language：English Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Japanese-German Centre, Berlin, Germany

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Works

Roundtable Discussion: Revision of the Basic Law on Food, Agriculture and Rural Areas

2023.1

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Welcome to a seminar room: Takumi Sakuyama's seminar

2017.4

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We read "Agriculture and Economy" like this: Linking Japanese food boom to the expansion of agricultural exports (Food Trade Seminar, Department of Agri-food and Environmental Policy, School of Agriculture, Meiji University )

2017.4

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The TPP should be a catalyst for change through understanding of its essence

2015.11

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Department of Agri-Food and Environmental Policy: Office of Food Trade

2015.2

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Political economy of trade negotiations: Why did Japan participate in the TPP negotiations?

2014.7

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Awards

Incentive award 2015, Japan Academy for International Trade and Business

2016.5 Japan Academy for International Trade and Business The truth about Japan's participation in the TPP negotiations: Revealing its policy process

Takumi Sakuyama

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Award type：Award from Japanese society, conference, symposium, etc. Country/Region：Japan

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Research Projects

An Empirical Study on the Impact of Trump’s Tariffs on Japan’s Agricultural Trade

Grant number：26K08983 2026.4 - 2030.3

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

Takumi Sakuyama

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Authorship：Principal investigator Grant type：Competitive

Grant amount：\3510000 （ Direct Cost: \2700000 、 Indirect Cost：\810000 ）

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Empirical study on export promotion policy for Japan's agricultural products

Grant number：22K0585 2022.4 - 2026.3

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

Takumi Sakuyama

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Authorship：Principal investigator Grant type：Competitive

Grant amount：\2470000 （ Direct Cost: \1900000 、 Indirect Cost：\570000 ）

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Policy process of rice market opening in the TPP: A comparison with the GATT Uruguay Round

Grant number：16K07911 2016.4 - 2019.3

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

Sakuyama Takumi, YAMADA Masaru

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Authorship：Principal investigator Grant type：Competitive

Grant amount：\4940000 （ Direct Cost: \3800000 、 Indirect Cost：\1140000 ）

In this study, the originally planned research method became difficult to implement due to the US withdrawal from the TPP agreement. Therefore, I estimated an order probit model that uses candidates’ attitude toward the TPP in the 2012, 2013 and 2016 elections as dependent variables, and the various factors suggested by previous literature as independent variables in order to identify the factors conditioning candidates’ pros and cons of the TPP. As a result of the analysis, it was found that, while the election system was by no means statistically significant and the attributes of electorates were not significant in many cases, the political beliefs of individual candidates (affinity to agriculture and Asia, animosity to small governments and immigrants, etc.) as well as the attributes of individual candidates (especially affiliated political parties) were significantly affect the pros and cons of the TPP.

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Research on the Impact of Restrictive Export Measures on Agricultural and Food Products on Global Food Supply, Demand, Trade Structure and Food Security

2023.11 - 2026.3

Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries

Takumi Sakuyama

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Authorship：Coinvestigator(s)

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Other

実用フランス語検定２級

2002.2

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国際連合公用語英語検定Ａ級

1993.8

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農業改良普及員（山形県）

1987.10

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Teaching Experience

Introduction to Agri-Food and Environmental Policy

2015.4 Institution：School of Agriculture, Meiji University

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Level：Undergraduate (specialized)

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Agricultural and rural development policies of the European Union

2014.4 - 2017.3 Institution：Organization for International Collaboration, Meiji University

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Level：Undergraduate (liberal arts)

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International Trade Rules on Food and Agriculture

2013.4 Institution：School of Agriculture, Meiji University

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Level：Undergraduate (specialized) Country/Region：Japan

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Food trade advanced course

2013.4 Institution：Master's Program, Graduate School of Agriculture, Meiji University

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Level：Postgraduate

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Food Trade

2013.4 Institution：School of Agriculture, Meiji University

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Level：Undergraduate (specialized)

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Economics of Trade Policy

2013.4 - 2020.3 Institution：School of Agriculture, Meiji University

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Level：Undergraduate (specialized)

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Social Activities

Testifier

Role(s)： Appearance

Committee on Agriculture, Forestry and Fisheries, House of Councillors 2024.5

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Type：Other

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Testifier

Role(s)： Appearance

Budget Committee Public Hearing, House of Councillors 2024.3

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Type：Other

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Testifier

Role(s)： Appearance

Special Committee on the Trans-Pacific Partnership Agreement, House of Councillors 2016.11

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Type：Other

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Supervisor of Japanese subtitled edition

Role(s)： Advisor

Maruzen Publishing Corporation) Jimmy's Food Price Hike 2015.4 - 2015.6

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Type：Other

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Media Coverage

コメ不足と米国の圧力輸入米が日本を救う？一石二鳥の解決策探る TV or radio program

BSフジ LIVEプライムニュース 2025.4

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羽鳥慎一モーニングショーへの出演 TV or radio program

テレビ朝日羽鳥慎一モーニングショーテレビ朝日 2025.4

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Appearance on TV program TV or radio program

Japan Broadcasting Corporation Sunday Debate 2019.9

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Appearance on TV program TV or radio program

Japan Broadcasting Corporation Sunday Debate 2017.7

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米価維持一辺倒は限界直接支払い、拡充検討を Newspaper, magazine

秋田魁新報社秋田魁新報 23面 2026.6

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Author：Other

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政府、南米とのEPA交渉へ資源の安定調達狙う北海道の畜産業には打撃か Newspaper, magazine

北海道新聞社北海道新聞 5面 2026.5

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Author：Other

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日本のコメ、失われた競争力 Newspaper, magazine

朝日新聞社朝日新聞 2面 2026.5

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Author：Other

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単価の引き上げ必須（中山間支払いあるべき姿②） Newspaper, magazine

日本農業新聞 2面 2026.5

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Author：Other

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日本の農業は補助金でじゃぶじゃぶなのか？ Newspaper, magazine

家の光協会地上 39-40頁 2026.4

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Author：Other

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農業は捨て石明白（日米関税合意の裏側） Newspaper, magazine

農業協同組合新聞 1面 2025.9

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Author：Other

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国の輸入米活用の選択肢（お米作る食べるインタビュー） Newspaper, magazine

読売新聞 23面 2025.6

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Author：Other

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コメ輸入拡大回避策ならず（トランプ関税専門家に聞く） Newspaper, magazine

北海道新聞 5面 2025.5

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Author：Other

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トランプ氏返り咲き貿易は？（明治大・作山専任教授に聞く） Newspaper, magazine

日本農業新聞 2面 2024.11

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Author：Other

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自給力高め農地維持（みらい考 '22いわて参院選） Newspaper, magazine

岩手日報 2022.7

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Author：Other

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農業「捨て石」の交渉コメ含め再協議を警戒 Newspaper, magazine

農業協同組合新聞 3面 2019.10

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Author：Other

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日米貿易協定の実情（現場からの農村学教室158） Newspaper, magazine

日本農業新聞 9面 2019.10

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Author：Myself

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令和の不平等条約（識者に聞く） Newspaper, magazine

日本農業新聞 2019.9

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Author：Other

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日米物品貿易協定交渉（現場からの農村学教室118） Newspaper, magazine

日本農業新聞 9面 2018.12

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Author：Myself

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TPP国会次違反「明白」 Newspaper, magazine

東京新聞 1面 2016.12

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Author：Other

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TPP特別対談 Newspaper, magazine

日本農業新聞 2面 2016.4

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Author：Other

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Recommendations to Citizens concerning TPP Negotiations -Deciphering the Course of TPP Negotiations: The Judgment Required of Individual Citizens- Internet

2014.3

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Author：Other

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