全球食品贸易可以减轻环境PM2.5污染造成的大量健康负担
Zhencheng Xing1,2,3,4, Yifan Liu5, Maksym Chepeliev6
1Joint International Research Laboratory of Atmospheric and Earth System Sciences, School of Atmospheric Sciences, Nanjing University, Nanjing, China.
Nature food
|February 27, 2026
概括
全球粮食系统因细颗粒物 (PM2.5) 污染造成大量死亡. 国际粮食贸易,虽然可以防止一些死亡,但也会转移排放,影响全球的公共卫生.
科学领域:
- 环境健康 环境健康
- 全球健康 全球健康
- 空气质量科学 空气质量科学
背景情况:
- 现有的PM2.5相关死亡率估计往往忽视了全球粮食系统的贸易和消费影响.
- 食品生产造成的空气污染通过国际贸易影响到遥远的人口.
研究的目的:
- 调查国际食品贸易如何重新分配食品生产产生的空气污染物排放.
- 评估后续对全球空气质量和公共健康的影响.
主要方法:
- 整合了四种先进的全球模型.
- 分析空气污染物排放,国际食品贸易数据,以及由此产生的PM2.5相关死亡率.
主要成果:
- 与食品相关的排放导致2017年估计有840,400人死于PM2.5污染.
- 其中约有11% (94,100人死亡) 与全球食品贸易有关.
- 通过将生产从人口密集地区转移,转移粮食出口可以防止44900人死亡.
结论:
- 国际食品贸易在转移空气污染和相关死亡率方面发挥着重要作用.
- 优化全球食品贸易路线为减少与食品相关的健康风险提供了潜力.
- 可以利用食品贸易伙伴关系来减轻空气污染对公共卫生的影响.
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