摘要
CH4是除CO2以外的最重要的温室气体,是大气中含量最丰富的有机痕量气体。估算我国甲烷排放量对控制温室气体的排放有着重要的意义。采用2006年IPCC清单指南推荐的温室气体清单编制方法,结合国内外研究成果,选取适合我国的排放因子,利用官方统计数据对2000～2005年我国各省煤炭开采、废弃物管理、生物质燃烧、水稻种植、牲畜反刍、粪便管理等排放源的排放量分别做了估算,并得到空间分布状况。结果表明:与1994年相比,我国甲烷排放总量有所增大,1994年排放总量为34287Gg(1Gg=106kg),至2005年增加到41493Gg,主要是煤炭开采甲烷排放量增加趋势最为明显,但是与我国GDP增加速度和能源使用量增加速度相比,我国的甲烷排放还是有所控制的。在空间分布上来看,各省排放量地区差异明显,CH4排放量较大的区域主要集中在我国的东北、华北以及西南地区,西北地区和部分直辖市排放量较低,另外各省排放源的配置也各不相同,主要与各区域排放源的变化有关。
Atmospheric methane is the second most important greenhouse gas after COz and the most trace gas. The estimation of methane emission in China is significant for the e- mission control of greenhouse gases. Referencing the methods provided by IPCC 2006, the latest research results and local emissions factors, we estimate the anthropogenic emission of methane and its distribution by provinces. The data are based on statistical yearbooks from 2000 to 2005 including coal mining, waste disposal, biomass burning, paddy fields, domestic animal rumination and manure management systems. The results show that the total methane emission in China increased from 34287 Gg （1994） to 41493 Gg （2005）. The methane emission increasing trend of the coal mining is most apparent. But compared with the growth rate of GDP and energy usage, the methane emission is under control. The methane emission is distributed unevenly in space with regional differences. The regions with higher methane emission are located in Northeast China, North China and Southwest China, while those with lower emission are located in Northwest China and some munici- palities. In addition, the configurations of emission sources are different due to the chan- ges of local emission sources.
出处
《地理研究》
CSSCI
CSCD
北大核心
2012年第9期1559-1570,共12页
Geographical Research
基金
中国科学院知识创新工程重要方向项目(KZCX2-YW-Q1-09)
国家重点基础研究发展计划973项目(2012CB955803-15)
教育部科学技术研究重点项目(108149)
关键词
中国
温室气体
甲烷排放
估算
空间分布
China
greenhouse gas
methane emission
estimation
distribution
