在中国实现低碳,健康和公平的粮食体系的协调途径
Xinxian Qi1, Zemiao Liu2, Yiqi Zhou2
1School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China; The Key Laboratory of Carbon Neutrality and Territory Optimization, Ministry of Natural Resources, Nanjing 210023, China; Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing 210023, China.
Science bulletin
|March 7, 2026
概括
应对粮食不安全和气候变化需要采取协调的粮食系统方法. 整合供应链,消费者和土地管理策略可以在2060年前显著减少温室气体排放并改善营养.
科学领域:
- 环境科学 环境科学
- 农业经济学 农业经济学
- 公共卫生 公共卫生
背景情况:
- 粮食系统对碳排放做出了重大贡献,使气候变化缓解工作复杂化.
- 粮食分配现有的空间差异加剧了社会经济不平等.
- 粮食不安全,营养不足和气候目标等同时面临的挑战需要综合解决方案.
研究的目的:
- 加强一个区域综合评估模型,对中国的省级食品系统进行自下而上的生命周期评估.
- 评估健康饮食,低碳排放和到2060年减少不平等的战略之间的权衡和协同作用.
- 确定一个可持续和公平的粮食未来的最佳途径.
主要方法:
- 为中国的省级食品系统开发一种新的自下而上的生命周期评估框架.
- 将该框架纳入区域综合评估模型.
- 场景分析,以评估各种减缓战略及其对排放,营养和不平等的影响.
主要成果:
- 如果没有足够的碳减排,单一的减缓措施可能会增加粮食成本和不平等.
- 综合供应链,消费者需求和土地管理的协调方法可以实现大幅减少.
- 预计到2060年的影响:温室气体排放减少41.7%,营养质量改善24.4%,不平等减少21.9%.
结论:
- 跨部门,区域协调的粮食系统框架对于实现气候目标至关重要.
- 综合战略对于确保充足的营养和促进负担得起的,公平的粮食系统至关重要.
- 政策干预必须解决气候,营养和公平目标的相互联系.
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