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Qunchao Fang¹, Xiaoying Zhang¹, Guichao Dai¹

¹College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing, PR China.

|July 31, 2023

概括

养动物更多的低机会成本料产品 (LCF) 可以减少食品料的竞争. 增加LCF的使用可以节省耕地和资源,可能为数百万人提供食物.

科学领域:

农业经济学农业经济学
动物营养动物营养
可持续的资源管理可持续的资源管理

背景情况:

动物料中很大一部分是人类食用的产品.
在中国,可用的低机会成本料产品 (LCFs) 的利用不足.
LCFs减轻食品料竞争和资源压力的潜力.

研究的目的:

评估中国在动物料中增加LCF利用的潜力.
量化 LCF 增强使用对耕地,水和排放的影响.
评估通过耕地重新分配对粮食安全的影响.

主要方法:

开发和应用一个料分配优化模型.
考虑料来源的可用性和动物营养需求 (蛋白质,能量).
对LCF可用性和当前利用率 (2009-2013) 的分析.

主要成果:

大约三分之一的动物料由人类可食用的产品组成.
只有23%的可用LCF被用作动物料.
增加LCF利用率 (45-90万) 可以节省25-32%的料生产作物土地.
显著减少了水,肥料和温室气体排放 (大约. 三分之一).

结论:

增加LCF的利用提供了可观的环境和节约资源的好处.
挽救的耕地重新分配可能会对粮食能源安全作出重大贡献.
技术进步和利益相关者协调对于实现LCF潜力至关重要.

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