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将农场到屠宰的排放量归因于:来自牛肉供应链的证据

Mondina Francesca Lunesu¹, Fabio Correddu¹, Silvia Carta¹

¹Sezione di Scienze Zootecniche, Dipartimento di Agraria, University of Sassari, Viale Italia, 39, 07100 Sassari, Italy.

Animals : an open access journal from MDPI

|December 30, 2025

概括

准确的生命周期评估 (LCA) 需要分配牛生产影响. 对原皮的经济分配比实物分配更合适,防止过度估计肉类.

科学领域:

环境科学环境科学
农业经济学农业经济学
工业生态学工业生态学

背景情况:

透明生命周期评估 (LCA) 需要在肉类,牛奶和原皮之间一致地分配来自畜牧业的气候影响.
目前用于牛养殖副产品的分配方法,特别是原皮,可能会在环境影响评估中带来偏差.
意大利牛肉行业为评估副产品分配方法提供了一个相关的案例研究,因为它的生产规模很大.

研究的目的:

检查分配边界,并比较物理 (基于质量) 与牛生产中原皮的经济分配方法.
用意大利牛肉行业的大量数据评估原皮造成的上游环境负担.
测试关于皮肤所承担的排放份额的假设,经济和物理分配之间的比较,以及分配份额的时间变化.

主要方法:

在生命周期评估 (LCA) 中审查分配边界和方法.
使用意大利牛肉部门数据对物理 (基于质量) 和经济分配方法进行比较分析.
根据不同的分配方法 (GWP100) 计算原皮的上游碳足迹.

主要成果:

所有经过测试的假设都得到证实:皮革的排放份额不等于零,经济分配的负担低于物理分配,份额因价格比率而异.
物理分配将5.9%的活重分配给皮革,而经济分配将在2023年分配2.7%.
原皮革的上游碳足迹在1.63公斤CO2eq/kg (经济) 到3.55公斤CO2eq/kg (物理) 之间.

结论:

在畜牧业中忽视副产品分配导致过高估计肉类对环境的影响,低估皮革的影响.
经济分配是最合适和与政策一致的方法,用于核算原皮,反映市场价值并减少偏差.
实施经济分配可以提高牛肉链生命周期评估 (LCA) 的准确性和透明度.

关键词:

分配额的分配额度.这是牛肉副产品.牛皮是一种牛皮.他们的碳足迹.皮革皮革皮革皮革生命周期评估生命周期评估

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