摘要
农业生产的温室气体排放在总排放量中占有较大比重,中国是农业大国,因此,对中国农业生产的温室气体排放量进行测算显得尤为重要。借鉴前人研究,结合农业生产中各种产品的温室气体排放系数,对1991-2008年中国农业生产的温室气体排放量进行了初步测算。结果表明:①1991-2008年,种植业的CH4排放量从999.5万t下降到931.44万t,N2O的排放量从34.67万t增加到48.74万t;②同期间的畜牧业的CH4和N2O排放量均呈先升后降的趋势;CH4排放量从1991年的763.53万t上升到2006年的1 111.43万t后,又下降到2008年的900.74万t;N2O排放量从1991年的35.32万t上升到2006年的55.93万t后,又下降到2008年的46.90万t;③从农业温室气体排放的地区特征来看,四川(含重庆)、湖南、江苏、河南、山东和安徽等农业大省的温室气体排放量一直位居全国前列。
As China is a large agricultural country, and China' s greenhouse gases of agricultural production occupy a great proportion in the total greenhouse gases emission, it is very important to calculate greenhouse gases from the agricultural production process in China. In light of the previous research and various greenhouse gases emission factors of crop and livestock, this study aimed at preliminarily calculating the greenhouse gases emission from agricuhural production in China during 1991 -2008. We found that: (1) Methane emission of crop decreased from 9 995 000 t in 1991 to 9 314 400 t in 2008, but nitrous oxide emission of crop increased from 346 700 t in 1991 to 487 400 t in 2008. (2) Methane and nitrous oxide emission of livestock showed a trend of "inverse U-shape" : Methane emission increased from 7 635 300 t in 1991 to 11 114 300 t in 2006 and then decreased to 9 007 400 t in 2008. Nitrous oxide emission increased from 353 200 t in 1991 to 559 300 t in 2006 and then decreased to 469 000 t in 2008. (3) On the regional angle, greenhouse gases emission from agricultural production in Sichuan ( plus Chongqing City), Hunan, Jiangsu, Henan, Shandong and Anhui Provinces are in the front ranks of greenhouse gases emission of agricultural production in China.
出处
《中国人口·资源与环境》
CSSCI
北大核心
2012年第7期21-27,共7页
China Population,Resources and Environment
基金
国家社会科学基金重大招标项目(编号:10zd&031)
江苏省教育厅高校哲学社会科学研究重大项目(编号:2010ZDAXM018)
江苏省普通高校研究生科研创新计划项目(编号:CXLX11-0709)
关键词
中国
种植业
畜牧业
温室气体
测算
China
crop
livestock
greenhouse gases
calculation