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全球环境效益减半可避免的消费食品浪费
Antoine Coudard1,2, Zhongxiao Sun3, Paul Behrens1
1Institute of Environmental Sciences (CML), Leiden University, PO Box 9518, Leiden 2300 RA, The Netherlands.
Environmental science & technology
|July 29, 2024
概括
减少可避免的消费者食品浪费 (ACFW) 显著减少排放,水和土地利用影响. 在主要的粮食生产国中,针对牛肉等关键商品提供了巨大的环境效益.
科学领域:
- 环境科学 环境科学
- 农业经济学 农业经济学
- 可持续性研究 可持续性研究
背景情况:
- 可避免的消费食品浪费 (ACFW) 是一个重大的全球环境挑战,耗尽资源并产生排放,特别是在粮食生产高的国家.
- ACFW的环境足迹包括温室气体排放,淡水消耗和土地利用,不成比例地影响主要的粮食生产国.
研究的目的:
- 追踪ACFW的起源并量化其相关的环境影响,包括排放,用水和土地利用.
- 评估减少ACFW的潜在环境效益,与可持续发展目标 (SDG) 12.3b保持一致.
主要方法:
- 生命周期评估和空间分析,以追溯ACFW到其起源并量化环境影响.
- 商品和国家特异性影响评估,以确定关键驱动因素和高影响地区.
- 场景建模以评估减少50%ACFW的好处.
主要成果:
- ACFW的影响主要与牛肉,乳制品,大米和小麦等商品有关.
- 超过80%的ACFW影响是国内的,贸易体现的影响影响了一些主要的粮食生产国.
- 减少50%的ACFW可以节省198万CO2eq的排放量,30亿立方米的蓝水和99万土地.
- 节省土地的重新植被可以长期扣留17-35 Gt CO2eq.
结论:
- 针对特定商品 (例如,美国牛肉) 和高影响国家的目标可以产生显著的环境收益.
- 为了减少50%的总食物浪费,需要减少93%的ACFW,强调解决可避免的部分的重要性.
- 对ACFW影响的空间跟踪可以为旨在实现SDG 12.3b的政策提供信息和加强.
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