生态与农村环境学报2013，Vol.29Issue(4)：449-453,5.
农村户用沼气项目的碳减排效益核算——以湖北省恩施州为例
Benefit Analysis of Rural Household Biogas Projects in Reducing Carbon Emission: A Case Study of Enshi Prefecture
摘要
Abstract
Based on the model recently modified for accounting of carbon mitigation and the research achievements of the scientists in China as reference for values of some key parameters,Enshi Prefecture of Hubei Province was selected for case study to evaluate effects of the popularization of rural household biogas projects in 2000-2010 on carbon mitigation from the following 4 aspects,direct carbon emission reduction by use of methane,substitution of fossil energy reducing carbon emission,carbon emission through leakage,and carbon emission from methane combustion.Results show that carbon reduction per unit (per biogas digestor) varied in the range of 1.10-1.29 tons per year,depending on specification of a digestor (number of pigs in pen and type) and air temperature,and its indirect portion (1.07 t · a-1) was 4.9 times as much as its direct portion (0.22 t · a-1).The annual effect on carbon mitigation in the prefecture increased with the increasing number of biogas digestors in 2000-2010,and the reduction of carbon emission increased from 39 700 tons per year in 2000 to 709 300 tons per year in 2010.During this period,the use of biogas digestors treating livestock manures directly reduced carbon emission by 1.574 4 million tons and the substitution of coal with biogas indirectly reduced carbon emission by 3.618 2 million tons,while the carbon emission from the combustion of methane increased by 0.131 2 million tons and methane leakage by 0.899 4 million tons.Balancing of the four factors shows that the total carbon mitigation benefit was 4.162 0 million tons.关键词
农村/户用沼气/碳减排/恩施/综合核算Key words
rural area/ household biogas digester/ carbon emission reduction/ Enshi/ accounting分类
资源环境引用本文复制引用
徐琬莹,周传斌,陈永根,王如松..农村户用沼气项目的碳减排效益核算——以湖北省恩施州为例[J].生态与农村环境学报,2013,29(4):449-453,5.基金项目
"十二五"科技支撑计划(2012BAC13B04) （2012BAC13B04）
国家自然科学基金(41201579) （41201579）
