2025农业领域甲烷减排机遇报告：技术、经济及监管层面的考量（英）

Opportunities formethane mitigationin agriculture Technological, economic,and regulatory considerations Swati Hegde, Timothy D. Searchinger, and Mario Julien Diaz ACKNOWLEDGMENTS AUTHORS We are pleased to acknowledge our institutional strategic partners that provide core funding to WRI:the Netherlands Ministry of Foreign Affairs, Royal Danish Ministry of Foreign Affairs, and SwedishInternational Development Cooperation Agency. SWATI HEGDE |Manager, Agricul-tural Methane at WRIContact:swati.hegde@wri.org The authors extend their gratitude to the following individuals for their valuable guidance and criticalreviews: Charles Brooke (Spark Climate Solutions), Fernanda Fiera (Clean Air Task Force), AprilLeytem (USDA), Thomas Trabold (RIT), Olaf Erenstein (WRI), Raychel Santo (WRI), Robert Mbeche(WRI), Shashidhar K. Jha (WRI), Emily Dionizio (WRI), Victor Otieno (WRI), and Richard Waite (WRI). TIMOTHY D. SEARCHINGER |SeniorFellow and Technical Director for Agriculture,Forestry, and Ecosystems at WRI and SeniorResearch Scholar at Princeton University Thanks to Gregory Taff (WRI), Laura Malaguzzi Valeri (WRI), and Renee Pineda (WRI) for ensuring ahigh-quality analysis and publication. We also thank Lauri Scherer and LSF Editorial for copyeditingand proofreading, as well as Shannon Collins and Romain Warnault for design and layout. Contact:tim.searchinger@wri.org MARIO JULIEN DIAZ |Carbon Verifica-tion Lead, Arbonics, and formerly ResearchManager, Climate Ambition and Imple-mentation at WRI We are grateful to the primary funders of this work: Cargill and the Platform for Agriculture andClimate Transformation (PACT). Their generous support made this analysis and report possible. Acknowledgment of funding, advice and/or information does not imply endorsement of any or all ofthe report’s conclusions, which are solely the responsibility of WRI and the authors.. DESIGN AND LAYOUTSHANNON COLLINSshannon.collins@wri.org SUGGESTED CITATION Hegde, S., T.D. Searchinger, and M.J. Diaz. 2025. “Opportunities for methane mitigation in agriculture:Technological, economic, and regulatory considerations.” Report. Washington, DC: World ResourcesInstitute. Available online at doi.org/10.46830/wrirpt.23.00110. VERSION 1March 2025 CONTENTS 53Reducing methane emissions from riceproduction58Yield improvement59Changes to irrigation practices60Changes to soil management62Assessment of rice methane reduction solutions65Conclusion68Appendices68Appendix A: Agricultural methane mitigationthrough demand reductions69Appendix B: Enteric methane R&D investments70Appendix C: Methodological note72Endnotes73References89About WRI 17Methods and effects of improving feed efficiency26Enteric methane inhibition31Other emerging solutions31Assessment of enteric methane reductionsolutions 35Reducing methane emissions from manuremanagement 42Manure collection and storage interventions46Manure treatment49Manure additives (or chemical treatments)51Assessment of manure methane reductionsolutions Foreword Today, agriculture accounts for approximately half ofglobal methane emissions. Methane has 80 times thewarming impact of carbon dioxide over a twenty-yearperiod. At the same time, agriculture holds the key tomany solutions for people, nature, and climate. sectors, like energy, can significantly drive greaterprogress. Notably, we see huge promise in integratedapproaches—combining multiple technologies andpractices—to achieve even greater methane reductions. Yet, meaningful methane reductions can only beachieved with collective action across sectors. Govern-ments must lead with robust regulations and policies,targeted investments, and financial incentives. Theprivate sector should drive innovation and provideresources to scale solutions across supply chains. Civilsociety can foster awareness and advocate for effective,equitable policies. Farmers, at the heart of this effort,can innovate and adopt practices that cut emissionswhile increasing productivity. By uniting througheducation, capacity building, and partnerships, we cancreate widespread impact. Effectively transforming agriculture can boost pro-ductivity, farmer incomes, and resilience. This reportexamines the current research on agricultural methanemitigation—including for livestock and rice culti-vation—and describes a broad range of practices,technologies, costs, and regulatory considerations thatmust be considered in effectively unlocking the sector’sfull potential. The good news is that many solutions are alreadyavailable, from improving livestock feed efficiency toenhancing manure management and adopting modernrice cultivation practices. Many mitigation solutionsalso improve yields, reduce water use, and lower feedcosts, increasing profits and improving livelihoods.There is a huge opportunity to align climate actionwith better outcomes for people and more sustain-able food systems. By embracing these solutions and their multiplebenefits, the food and agriculture sector can fe