摘要
作为农村节能的重要工具,户用沼气池被广泛应用,对其碳减排效果的量化评估,有助于农业温室气体减排工作的落实。对此,文中借鉴生命周期方法的研究思路,结合EIO模型和能源替代等方法,对我国户用沼气池在建设和使用阶段的碳排放量进行评估。结果显示:单个户用沼气池在建设阶段将产生0.645吨的碳排放,但是结合使用阶段的碳减排效应,其寿命内将净产生34.77吨碳减排当量,平均每年实现3.48吨碳减排当量,其中能源替代效应是主要减排原因。从全国层面来看,户用沼气池每年将产生1.32亿吨的碳减排当量,约占农村生活用能碳排放总量的15%,减排效果颇为显著。因此,推广和应用户用沼气池依然是有效的农业温室气体减排措施,应当予以重视。
As an important measure for rural energy conservation,household biogas digesters have been widely used in rural China,and the quantitative evaluation of their carbon emission reduction potentials is helpful for further implementing mitigation practices in agriculture sector. To achieve the goal,from a life cycle perspective,this research adopted EIO model and energy substitution methods to calculate the effect of carbon emission reductions by household biogas digesters in both construction and operation phases. The results show that a single household biogas digester can produce 0. 645 tons of CO_2 equivalent emissions in its construction stage. But in its10-year operation phase,its net emission reduction can reach 34. 77 tons of CO_2 equivalents,average emission reduction per year is 3. 48 tons of CO_2 equivalents. At the national level,the household biogas digesters in the country can reduce total 0. 132 billion tons of CO_2 equivalent emissions every year,accounting for about 15% of the total CO_2 equivalent emissions in residential energy consumption in rural areas of China. So,the emission reduction effect is quite significant. Therefore,the use of biogas digesters is still an effective measure for rural emission reduction.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2018年第2期75-80,共6页
Journal of Arid Land Resources and Environment
关键词
户用沼气池
碳减排
投入产出模型
能源替代
household biogas digesters
carbon emission reduction
economic input - output model
energy substitution
