我国工业碳排放效率的行业差异及动态演进研究

Research on Industrial Differences in the Efficiency of Carbon Emissions and Dynamic Depict in China

摘要:

基于投入导向的超效率DEA模型,测算了2000-2011年我国36个工业行业碳排放效率,通过绝对β收敛和核密度分析其动态演进特征。结果表明：我国工业平均碳排放效率值为0.677,整体效率较低,其中轻工业效率值最高,其次为重工业、采矿业和供应业；绝对β收敛显示,2000-2011年全行业、采矿业和重工业通过了收敛检验,存在对碳排放效率高的行业的追赶效应；核密度分析可知,全行业及四大类别碳排放效率都得到了不同程度的提升,但内部行业间变动趋势存在明显不同。

Abstract:

With the super-DEA model which is based on the input oriented,this paper estimates the CO2 emission efficiency in Chinese 36 industrial sectors during 2000-2011; and then analyzes the Dynamic depict through absolute β convergence and kernel density estimation. The results show that: the industrial average CO2 emission efficiency is 0.677, which is relatively lower. In the measure of the CO2 emission efficiency, the efficiency of light industry was the highest, followed by heavy, mining and supply; Absolute β convergence shows that the whole industy, mining and heavy industry through the convergence test, having catch-up effect to the high CO2 emission efficiency of industrial sectors; Through kernel density estimation, the CO2 emission efficiency of the whole industry and the four categories have been varying degrees of improvement, while there are differences between the various movements in distinct categories industy.