基于SBM模型的我国CO_2排放效率测度研究

Research on the Measurement of CO_2 Emissions Efficiency in China Based on SBM Model

基于非径向的SBM模型测度了中国各省级行政区CO_2排放效率,并分析了Luenberger生产率指标及分解,从技术进步效应、效率追赶及"创新者"区域等角度探索中国各地区的CO_2排放效率。主要结论有:2000—2011年间,我国CO_2平均排放效率仅为54.9%,效率偏低,相对于效率前沿面存在较大的改善空间;我国东、中、西部三大区域的CO_2排放效率发展是不均衡的,东部CO_2排放效率显著高于中、西部;全国CO_2生产率MLPI指标平均增长率为0.62%,增长率较低,生产率增长的主要源泉是技术进步而非效率变化。

Based on the SBM model, this paper measures the efficiency of carbon dioxide emissions in China, then calcu- lates the productivity index of the carbon emissions and its decomposition, and analyzes the effect of technology progress, efficiency change and the ＂innovators＂ region. We come to the following the main conclusions： The average carbon dioxide emissions of the country is only 54. 9% during the period of 2000--2011, which means there is still large room to improve relatively to the frontier. The carbon emission efficiency of the East, Central and West regions is imbalance, and the effi- ciency in East is significantly higher than that in Central and West. The average growth rate of MLPI in China is only 0. 62%. Obviously, it is relatively low. The main source of productivity growth is the technological progress rather than the ehange of efficiency.