摘要
本文运用生命周期评价方法,对北方"四位一体"沼气生态农业模式的沼气系统在整个生命周期中对农业生态环境的影响进行了评价。研究表明,沼气系统整个生命周期排放污染物总量仅占所替代煤的燃烧所产生污染物总量的20(左右,沼气系统具有显著的生态环境效益。
Using life cycle assessment, this paper has conducted an agricultural eco-envlronmental impact assessment to the whole lifespan of biogas system in Four-in-one eco-agricultural mode in north China. The result indicated that the total amount of pollutant, discharged from biogas system in whole lifespan, only accounted for about 20% of that discharged from equivalent coal burning, and reduced pollutant discharge by 80%. Biogas system has remarkable ecological environment benefits.
出处
《中国沼气》
2008年第2期17-20,24,共5页
China Biogas
关键词
沼气
生命周期评价
环境保护
生态农业
温室
biogas
life cycle assessment
environment protect
eco-agriculture
