How much land-based greenhouse gas mitigation can be achieved without compromising food security and environmental goals?

文献类型： 外文期刊

第一作者： Smith, Pete

作者： Smith, Pete;Haberl, Helmut;Erb, Karl-heinz;Lauk, Christian;Popp, Alexander;Harper, Richard;Tubiello, Francesco N.;de Siqueira Pinto, Alexandre;Bustamante, Mercedes;Jafari, Mostafa;Sohi, Saran;Masera, Omar;Boettcher, Hannes;Berndes, Goeran;Ahammad, Helal;Clark, Harry;Dong, Hongmin;Elsiddig, Elnour A.;Mbow, Cheikh;Ravindranath, Nijavalli H.;Rice, Charles W.;Abad, Carmenza Robledo;Abad, Carmenza Robledo;Romanovskaya, Anna;Sperling, Frank;Herrero, Mario;Herrero, Mario;House, Joanna I.;Rose, Steven

作者机构：

关键词： AFOLU;agriculture;climate;ecosystem services;food security;forestry;GHG;mitigation

期刊名称：GLOBAL CHANGE BIOLOGY （ 影响因子：10.863； 五年影响因子：11.716 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Feeding 9-10 billion people by 2050 and preventing dangerous climate change are two of the greatest challenges facing humanity. Both challenges must be met while reducing the impact of land management on ecosystem services that deliver vital goods and services, and support human health and well-being. Few studies to date have considered the interactions between these challenges. In this study we briefly outline the challenges, review the supply- and demand-side climate mitigation potential available in the Agriculture, Forestry and Other Land Use AFOLU sector and options for delivering food security. We briefly outline some of the synergies and trade-offs afforded by mitigation practices, before presenting an assessment of the mitigation potential possible in the AFOLU sector under possible future scenarios in which demand-side measures codeliver to aid food security. We conclude that while supply-side mitigation measures, such as changes in land management, might either enhance or negatively impact food security, demand-side mitigation measures, such as reduced waste or demand for livestock products, should benefit both food security and greenhouse gas (GHG) mitigation. Demand-side measures offer a greater potential (1.5-15.6 Gt CO2-eq. yr-1) in meeting both challenges than do supply-side measures (1.5-4.3 Gt CO2-eq. yr-1 at carbon prices between 20 and 100 US$ tCO2-eq. yr-1), but given the enormity of challenges, all options need to be considered. Supply-side measures should be implemented immediately, focussing on those that allow the production of more agricultural product per unit of input. For demand-side measures, given the difficulties in their implementation and lag in their effectiveness, policy should be introduced quickly, and should aim to codeliver to other policy agenda, such as improving environmental quality or improving dietary health. These problems facing humanity in the 21st Century are extremely challenging, and policy that addresses multiple objectives is required now more than ever.

分类号： 58

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