中国农村生物质能消费的CO_2排放量估算

Estimation of CO_2 emission discharged from rural bioenergy consumption in China

借助国际通用的CO2排放量计算方法,利用1996～2006年中国农村可再生能源统计资料,对中国农村生物质能消费的CO2排放情况及其空间分布进行分析探讨。结果表明,中国农村生物质能消费的CO2排放总量达到7.25×108t,约占农村生活能源消费CO2排放量的65%,占全国温室气体总排放量的11.2%,其中秸秆、薪柴等传统生物质能利用方式贡献较大,可达98.64%～99.74%;中国农村生物质能消费CO2排放量的空间分布不均,四川、广西等省CO2排放量大,属超重排放区域,北京、天津、上海、西藏、青海等省(市、区)排放量小,属轻排放区域;区域生物质资源条件和经济社会水平是影响农村生物质能消费CO2排放的主要因素。

Analyzed the CO2 emission discharged from rural bioenergy consumption and its spatial distribution in China from 1996 to 2006 by international commonly used calculation method of CO2 emission. The results showed that the total amount of CO2 emission discharged from rural bioenergy consumption can reach to 755 million tons, which accounts for 65% of total CO2 emission in rural energy consumption and 11.2% of total national greenhouse gas emissions, and the contribution rate of traditional bioenergy （such as the straw, fuel wood, etc.） to CO2 emissions is relatively great with a contribution rate of 98.64%-99.74%. In view of the spatial distribution of CO2 emissions discharged from rural bioenergy consumption in China, Sichuan,Guangxi,etc. are the overweight areas, and Beijing, Tianjin, Shanghai, Tibet, Qinghai,etc. are light emission areas; the regional biomass resource condition and economic-social level are the main factors which influence the CO2 emission.