Decoupling food insecurity from shocks: A global analysis of food system resilience

• 成果类型: Article
• 署名作者: Bene, Christophe; Sasso, Alessandro; Abdulai, Abdul-Rahim; Battersby, Jane; Cattaneo, Andrea; Collins, Greg; Even, Brice; Frankerberger, Timothy; Fanzo, Jessica; Guarin, Alejandro; Gephart, Jessica A.; Golden, Christopher D.; Hendriks, Sheryl; Herrero, Mario; Lang, Tim; Lidder, Preetmoninder; Maitre d'Hotel, Elodie; Nguyen, Trang; Nguyen, Cuong M.; Nowak, Andreea C.; Nyiawung, Richard A.; de Steenhuijsen Piters, Bart; Saisana, Michaela; Rashid Sumaila, U.; Vivero-Pol, Jose-Luis; Rattan, Lal; Webb, Patrick; Zhang, Jing
• 署名单位: Alliance; International Center for Tropical Agriculture - CIAT; European Commission Joint Research Centre; EC JRC ISPRA Site; Alliance; International Center for Tropical Agriculture - CIAT; University of Cape Town; Food & Agriculture Organization of the United Nations (FAO); Alliance; International Center for Tropical Agriculture - CIAT; Wageningen University & Research; Johns Hopkins University; University of Washington; University of Washington Seattle; Harvard University; Harvard T.H. Chan School of Public Health; University of Pretoria; Cornell University; Food & Agriculture Organization of the United Nations (FAO); Wageningen University & Research; Wageningen University & Research; University of Waterloo; Wageningen University & Research; University of British Columbia; University System of Ohio; Ohio State University; Cornell University; University of Oxford; University of Oxford
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-8424; 1091-6490
• DOI: 10.1073/pnas.2536118123
• 发表日期: 2026-09-22
• 页码: e2536118123
• 关键词: resilience; food systems; global assessment; sustainability; GOVERNMENT; governance; security

摘要

Food systems worldwide are increasingly exposed to climate extremes, conflicts, pandemics, and economic shocks, raising concerns about their capacity to safeguard food security and nutrition. Although resilience is now central in global policy debates, empirical evidence on what enables national food systems to withstand shocks remains limited. Here, we analyze a unique multi-country dataset integrating measures of shock severity, governance, economic conditions, social capitals, and food-system characteristics. Using a causal resilience-as-capacity framework and a series of hybrid econometric models, we assess how structural factors and emergent system properties shape countries' ability to limit rises in prevalence of undernourishment when affected by shocks. We show that experiencing more severe shocks does not systematically lead to worse food security: several highly affected countries-particularly in Asia-display encouraging outcomes despite severe disturbances. More generally, countries with stronger resilience capacities and more favorable food-system characteristics fare better during shocks. Especially, within-country improvements in government effectiveness, food-supply redundancy, or GDP per capita significantly reduce deterioration in undernourishment, while stronger social capital supports long-term improvement across countries. Together, these findings indicate that food-system resilience capacities can weaken the relationship between shock severity and food insecurity, with food-system resilience then understood as the ability to decouple food-security outcomes from shock severity. These findings provide one of the first global empirical assessments of the factors underpinning food-system resilience. Strengthening institutional effectiveness, enhancing redundancy, and investing in social capital emerge as critical pathways for building resilient food systems in an increasingly shock-prone world.