CO2排放承载力计算模型的构建与应用

针对现有生态足迹未考虑CO₂排放承载力的问题,从碳吸收角度将净初级生产力与生态足迹法相结合,构建了CO₂排放承载力计算模型,据此对吉林省近15年的CO₂排放承载力进行了动态分析。结果显示,1994～2008年,吉林省人均CO₂排放承载力从2.0345hm²减少到1.9504hm²,呈先升后降波动变化趋势。在CO₂排放承载力构成中,林地、耕地、草地是主体,三者合计占89.54%～94.43%;草地变化最大,从0.5692hm²减少到0.1857hm²,降幅达67.38%;低生产力土地面积和草地面积均与人均CO₂排放承载力呈极显著相关(R²=-0.806、0.716),低生产力土地扩张和草地退化是人均CO₂排放承载力下降的主要影响因素。研究表明,CO₂排放承载力模型反映了自然环境对能源废弃物的消纳能力,符合区域资源禀赋的实际情况。

Construction and application of calculation model for CO2 emission carrying capacity

To solve the problem of ignoring CO_2 emission carrying capacity(CECC) in traditional ecological footprint,we constructed a CECC model by combining net primary productivity with ecological footprint method from a standpoint of carbon absorption,taking Jilin Province as a case study.The results showed that during 1994 and 2008,the CECC per capita decreased from 2.0345 hm~2 to 1.9504 hm~2,showing a fluctuation with rising first and declining afterwards.In the composition of CECC,forest,arable land and grazing...