Combining mitigation strategies to increase co-benefits for biodiversity and food security

Prudhomme Rémi, de Palma Adriana, Dumas Patrice, Gonzalez Ricardo, Leadley Paul, Levrel Harold, Purvis Andy, Brunelle Thierry. 2020. Combining mitigation strategies to increase co-benefits for biodiversity and food security. Environmental Research Letters, 15:114005, 15 p.

Quartile : Q1, Sujet : ENVIRONMENTAL SCIENCES / Quartile : Q1, Sujet : METEOROLOGY & ATMOSPHERIC SCIENCES

Résumé : World agriculture needs to find the right balance to cope with the trilemma between feeding a growing population, reducing its impact on biodiversity and minimizing greenhouse gas (GHG) emissions. In this paper, we evaluate a broad range of scenarios that achieve 4.3 GtCO2,eq /year GHG mitigation in the Agriculture, Forestry and Other Land-Use (AFOLU) sector by 2100. Scenarios include varying mixes of three GHG mitigation policies: second-generation biofuel production, dietary change and reforestation of pasture. We find that focusing mitigation on a single policy can lead to positive results for a single indicator of food security or biodiversity conservation, but with significant negative side effects on others. A balanced portfolio of all three mitigation policies, while not optimal for any single criterion, minimizes trade-offs by avoiding large negative effects on food security and biodiversity conservation. At the regional scale, the trade-off seen globally between biodiversity and food security is nuanced by different regional contexts.

Mots-clés Agrovoc : sécurité alimentaire, biodiversité, atténuation des effets du changement climatique, gaz à effet de serre, réduction des émissions, utilisation des terres, politique de l'environnement, conservation de la diversité biologique, stratégie pour faire face à une crise, émissions de gaz à effet de serre

Mots-clés libres : Climate mitigation, Global scale, Land use, Biodiversity

Classification Agris : P40 - Météorologie et climatologie
P01 - Conservation de la nature et ressources foncières
E10 - Économie et politique agricoles

Champ stratégique Cirad : CTS 6 (2019-) - Changement climatique

Auteurs et affiliations

• Prudhomme Rémi, CIRAD-ES-UMR CIRED (FRA) - auteur correspondant
• de Palma Adriana, Natural History Museum (GBR)
• Dumas Patrice, CIRAD-ES-UMR CIRED (FRA) ORCID: 0000-0002-3896-7589
• Gonzalez Ricardo, Natural History Museum (GBR)
• Leadley Paul, Université Paris-Sud (FRA)
• Levrel Harold, CIRED (FRA)
• Purvis Andy, Natural History Museum (GBR)
• Brunelle Thierry, CIRAD-ES-UMR CIRED (FRA) ORCID: 0000-0001-5350-8332

Source : Cirad-Agritrop (https://agritrop.cirad.fr/596395/)

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