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2.3粪便处理生命周期评估虽然研究表明饲料始终是家畜生产最大的环境压力,但在养殖地区,粪便处理是更大的问题,因为如果排泄物管理不善,N和P有可能流失进入淡水和地下水,NH3也存在酸化风险。可通过厌氧消化等技术减少直接施肥等传统处理方式带来的风险,同时沼气生产还可获得新效益。有效施肥也可减少化肥用量。LCA分析方法已经大量应用于猪粪分析。法国布列塔尼地区是硝酸盐脆弱区,所以
2.3 Lifetime assessment of manure disposal Although research has shown that feedstuffs are always the greatest environmental stress for livestock production, faecal handling is a greater problem in farmed areas because N and P are likely to drain into freshwater and groundwater if managed poorly, NH3 is also at risk of acidification. Technology such as anaerobic digestion can be used to reduce the risks posed by traditional treatments such as direct fertilization, while biogas production can also generate new benefits. Effective fertilization can also reduce the amount of fertilizer. LCA analysis methods have been extensively applied to pig manure analysis. Brittany, France is a vulnerable area of nitrate, so