海藻作为肉类和乳制品生产的气候修复:一个LCA视角
J-B E Thomas1, V W Xu2, S J Krizsan3
1Department of Sustainable Development, Environmental Science and Engineering, KTH Royal Institute of Technology, Teknikringen 10B, 100 44, Stockholm, Sweden. jbthomas@kth.se.
Scientific reports
|September 18, 2025
概括
海藻料添加剂可以减少牲畜产生的甲 (CH4),但整体温室气体 (GHG) 效益是适度的. 优化加工和采购是反动物系统有意义的气候收益的关键.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 海洋生物学 海洋生物学
背景情况:
- 畜牧供应链是全球温室气体 (GHG) 排放的主要贡献者,主要是通过反动物的肠道甲 (CH4).
- 海藻料添加剂被探索为减轻CH4的战略,但它们的综合性环境影响需要彻底评估.
研究的目的:
- 对七种海藻补充养方案进行生命周期评估 (LCA),用于牛肉,乳制品和绵羊生产.
- 评估海藻添加剂的环境权衡,包括气候变化,环保化,土地利用,化石燃料耗尽和水消耗.
主要方法:
- 生命周期评估 (LCA) 方法应用于与海藻补充的各种反动物生产系统.
- 评估多个环境影响类别,包括全球变暖潜力 (GWP),环保化,土地占用和水足迹.
主要成果:
- 在一些海藻添加剂中观察到体外CH4的减少,但实际世界温室气体排放的减少是适度的.
- 海藻的能源密集型加工和运输可以否定CH4减排的好处.
- 只有使用低影响海藻副产品的场景,才显示出净气候效益.
结论:
- 海藻添加剂在反动物系统中显示出降低CH4的潜力,但并不是实现转型气候效益的独立解决方案.
- 优化藻类采购,加工方法和应用策略对于最大限度地提高环境优势至关重要.
- 环境性能是敏感的因素,如GWP时间地平线,能源和牧场管理.
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