中国工业行业生态全要素能源效率及其收敛性

Ecological Total Factor Energy Efficiency of Chinese Industries and Its Convergence

文章采用非期望SBM模型测算了2002-2012年中国工业行业的生态全要素能源效率,根据效率值对工业行业进行了分类,然后分析了工业行业生态全要素能源效率的收敛性及其差异的影响因素。研究发现：中国工业各行业的生态全要素能源效率的差异比较明显,极差约为0.3;中国每年工业行业整体的能源效率为0.61~0.73,即节能潜力为27%~39%;工业整体、高效率行业和低效率行业都呈现出显著的绝对收敛和条件收敛的特征,表明工业行业整体的能源效率差异在缩小;一般效率行业只呈现出条件收敛,即这类行业收敛于自身的稳态;行业规模、研发投入和资本深化等指标对工业行业生态全要素能源效率具有显著的影响。

This paper applies the undesirable-SBM model to measure ecological total factor energy efficiency （ETFEE） of Chinese industries from 2002 to 2012, classifies the industries according to the values of energy efficiency, and then analyz- es the convergence differences of the ETFEE of industries and their influencing factors. The study shows that the ETFEE of Chinese industries is obviously different, and the range is about 0.3. The annual overall energy efficiency of Chinese indus- tries is between 0.61 to 0.73, which means energy saving potential is 27 percent to 39 percent. The entire industries and high-efficiency industries as well as low-efficiency industries present significant characteristics of absolute convergence and conditional convergence, which indicate that the differences of the overall energy efficiency of industries are narrowing. The general efficiency industry only presents conditional convergence, namely this type of industry converges its steady condition. Industry scale, R＆D investment and capital deepening as well as other indicators have significant impacts on the ETFEE of industries.