Which practices co‐deliver food security, climate change mitigation and adaptation, and combat land degradation and desertification?
2020
Smith, Pete | Calvin, Katherine | Nkem, Johnson | Campbell, Donovan | Cherubini, Francesco | Grassi, Giacomo | Korotkov, Vladimir | Le Hoang, Anh | Lwasa, Shuaib | Mcelwee, Pamela | Nkonya, Ephraim | Saigusa, Nobuko | Soussana, Jean‐francois | Taboada, Miguel Angel | Manning, Frances | Nampanzira, Dorothy | Arias‐navarro, Cristina | Vizzarri, Matteo | House, Jo | Roe, Stephanie | Cowie, Annette | Rounsevell, Mark | Arneth, Almut | Institute of Biological & Environmental Sciences ; University of Aberdeen | Joint Global Change Research Institute ; Pacific Northwest National Laboratory (PNNL)-University of Maryland [College Park] (UMD) ; University System of Maryland-University System of Maryland | United Nations Economic Commission for Africa (UNECA) ; United Nations | The University of the West Indies | Department of Energy and Process Engineering [Trondheim] (EPT NTNU) ; Norwegian University of Science and Technology [Trondheim] (NTNU) ; Norwegian University of Science and Technology (NTNU)-Norwegian University of Science and Technology (NTNU) | European Commission - Joint Research Centre [Ispra] (JRC) | Yu. A. Izrael Institute of Global Climate and Ecology (IGCE) ; the Russian Academy of Sciences [Moscow, Russia] (RAS) | Ministry of Agriculture and Rural Development [Hanoï] (MARD) | Department of Geography ; Makerere University [Kampala, Ouganda] (MAK) | Department of Human Ecology ; Rutgers, The State University of New Jersey [New Brunswick] (RU) ; Rutgers University System (Rutgers)-Rutgers University System (Rutgers) | International Food Policy Research Institute [Washington] (IFPRI) ; Consultative Group on International Agricultural Research [CGIAR] (CGIAR) | Center for Global Environmental Research, National Institute for Environmental Studies | Collège de Direction (CODIR) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Natural Resources Research Center (CIRN) ; National Agricultural Technology Institute (INTA) ; Ciudad Autónoma de Buenos Aires-Ciudad Autónoma de Buenos Aires | Department of Livestock and Industrial Resources ; Makerere University [Kampala, Ouganda] (MAK) | School of Geographical Sciences [Bristol] ; University of Bristol [Bristol] | Department of Environmental Sciences ; University of Virginia | Climate Focus B.V. | New South Wales Department of Primary Industries (NSW DPI) | Karlsruhe Institute of Technology = Karlsruher Institut für Technologie (KIT) | Institute of Geography ; The University of Edinburgh | UKRI NE/M021327/1EP/M013200/1NE/M016900/1UKERC NE/P019455/1BB/N013484/1European Union (EU)774378773901774124776810Wellcome Trust Research Council of Norway286773257622281113294534IPCC Trust Fund | European Project: 774378,Horizon 2020,CIRCASA(2017)
International audience
Mostrar más [+] Menos [-]Inglés. There is a clear need for transformative change in the land management and food production sectors to address the global land challenges of climate change mitigation, climate change adaptation, combatting land degradation and desertification, and delivering food security (referred to hereafter as "land challenges"). We assess the potential for 40 practices to address these land challenges and find that: Nine options deliver medium to large benefits for all four land challenges. A further two options have no global estimates for adaptation, but have medium to large benefits for all other land challenges. Five options have large mitigation potential (>3 Gt CO(2)eq/year) without adverse impacts on the other land challenges. Five options have moderate mitigation potential, with no adverse impacts on the other land challenges. Sixteen practices have large adaptation potential (>25 million people benefit), without adverse side effects on other land challenges. Most practices can be applied without competing for available land. However, seven options could result in competition for land. A large number of practices do not require dedicated land, including several land management options, all value chain options, and all risk management options. Four options could greatly increase competition for land if applied at a large scale, though the impact is scale and context specific, highlighting the need for safeguards to ensure that expansion of land for mitigation does not impact natural systems and food security. A number of practices, such as increased food productivity, dietary change and reduced food loss and waste, can reduce demand for land conversion, thereby potentially freeing-up land and creating opportunities for enhanced implementation of other practices, making them important components of portfolios of practices to address the combined land challenges.
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Información bibliográfica
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