用作资源的食物废物可以减少农业食品系统的气候和资源负担
Yingcheng Wang1,2, Hao Ying1, Darko Stefanovski2
1State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China.
Nature food
|March 12, 2025
概括
通过堆肥,无氧消化和动物料再利用来减少食物浪费,可以显著减少温室气体排放. 这些战略为实现循环经济提供了至关重要的途径,在全球范围内减轻环境影响.
科学领域:
- 环境科学 环境科学
- 农业学是一种农业学.
- 废物管理 废物管理
背景情况:
- 全球粮食损失和浪费构成了日益严重的环境挑战,导致了显著的碳足迹和资源枯竭.
- 目前以处置为主导的线性系统是不可持续的,需要转向以资源回收和再利用为重点的循环生物经济.
研究的目的:
- 与垃圾填埋场处理相比,量化各种食品废物管理策略的减排潜力.
- 评估重新利用食品废弃物的环境效益,包括节约资源,特别是用于动物料.
主要方法:
- 基于不同全球条件的现场研究的分析.
- 对堆肥,无氧消化和再养食品废弃物的比较评估,以防止垃圾填埋.
- 估计主要经济地区 (美国,欧盟,中国) 的减排能力.
主要成果:
- 堆肥,无氧消化和再养,相对于垃圾填埋,每回收的食品废弃物可减少约1tCO2e的排放.
- 消除美国,欧盟和中国的垃圾填埋处理可以分别抵消其10%,5%和17%的农业排放.
- 将食物废弃物转化为动物料 (再料) 显示了节省土地,水,燃料和肥料资源的巨大潜力.
结论:
- 食品废物管理策略,如堆肥,无氧消化和再养,对于减轻温室气体排放和推进循环农业食品系统至关重要.
- 这些方法为垃圾填埋提供了一个可行的替代方案,提供了显著的环境效益和资源保护.
- 这些发现为国家食品废弃物管理战略制定了基准,促进向可持续实践过渡.
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