2026-03-16 国立環境研究所,東京大学,立命館大学,京都大学,株式会社イー・コンザル
図１ 気候変動緩和策が飢餓リスク人口に与える影響（模式図）。
＜関連情報＞
- https://www.nies.go.jp/whatsnew/20260316/20260316.html
- https://www.nature.com/articles/s43016-026-01322-3
オゾン汚染の削減は、気候変動緩和策が世界の飢餓に及ぼす悪影響を部分的に相殺する Ozone pollution reduction partially offsets the negative impact of climate change mitigation efforts on global hunger
Shujuan Xia,Tomoko Hasegawa,Thanapat Jansakoo,Daniel Mason-D’Croz,Kazuaki Tsuchiya,Shinichiro Fujimori,Maksym Chepeliev,Marta Kozicka,Abhijeet Mishra,Willem-Jan van Zeist,Xin Zhao,Thijs de Lange,Thais Diniz Oliveira,Jonathan C. Doelman,Matthew Gibson,Petr Havlík,Mario Herrero,Ipsita Kumar,Yuki Ochi,Timothy B. Sulser,Marina Sundiang,Kiyoshi Takahashi,Jun’ya Takakura & Keith Wiebe
Nature Food Published:16 March 2026
DOI:https://doi.org/10.1038/s43016-026-01322-3
Abstract
Studies warning of the potential negative effects of climate mitigation on food security through the competing use of land for bioenergy and afforestation have overlooked the impact of reduced ozone and its potential enhancement of crop yields. Here we use six global agro-economic models to compare the impacts of climate change with climate mitigation policy and ozone reduction on agriculture. We find that ozone reduction could reduce the negative impact of a 1.5 °C-consistent climate change mitigation policy on global hunger by 15% in 2050. Sub-Saharan Africa and India, where hunger is most severe, account for 56% of this global reduction. Our findings indicate that the negative effects of climate mitigation on global hunger could be partially offset by the ozone reduction impact.
