基于技术差距的中国区域全要素能源效率研究

Study on China's regional total-factor energy efficiency based on technology gap

基于全要素方法,充分考虑到中国各地区能源利用的技术差距,利用数据包络分析(DEA)方法构建非参数前沿,在共同前沿方法框架下分析比较2001-2007年中国全要素能源效率的区域差异,在此基础上采用"共同技术率(MTR)"指标衡量中国区域之间能源利用的技术差距。实证结果表明:考察期内中国全要素能源效率整体水平较低且区域差异显著,还存在巨大的节能增产空间;从区域技术差距视角来看,三大地区差距明显,其中东部地区接近全国最优水平,实现了全国潜在最优能源技术的98%以上,而中西部地区距离全国最优能源技术还分别存在23.3%和30.3%的改进空间。当前,必须采取行之有效的措施以防止三大地区能源技术差距的进一步拉大。

On the basis of total factor method and considering the technology gap of energy utilization among China＇s each area sufficently,this paer constructs non-parametric frontier by Data Envelopment Analysis（DEA）.Under the framework of metafrontier,an analysis and comparison have been made of the regional disparities in total-factor energy efficiency throughout China from 2001 to 2007.Additionally,a quantitative MTR-based analysis has been made on the technology gap on regional energy use in China.Empricial conclusions to be drawn are as follows： the overall level of China＇s total-factor energy efficiency is on the low side and its regional disparities are significant during the sample period.There exists tremendous room for energy conservation and output growth.From the perspective of regional technology disparities,there are significant disparities among China＇s three major areas.The east area is close to China＇s optimal level and achieves the country＇s potential optimal energy technology over 98%,while the central area and the west area have 23.3% and 30.3% room for improvement away from the country＇s potential optimal energy technology respectively.As a result,we must take effective measures to prevent from the expanding of three areas＇ energy technology gap at present.