Study on China's Energy Efficiency and Its Spatio-temporal Variation from 1990 to 2010 Based on DEA-ESDA
Improving energy efficiency is one of the important ways to solve the energy problem.This paper analyzes trajectories and geographies of energy efficiency in China.More specifically it examines the evolution and regional differences in 1990,2000 and 2010 through the DEA model of the Total Factor Energy Efficiency (TFEE).And using the Exploratory Spatial Data Analysis (ESDA),the paper then discusses its spatial agglomeration as well as the cold and hot spots,and draws the following conclusions.1) There is a substantial difference in the energy efficiency among provinces in China,with higher energy efficiency in the eastern region and lower in the western region.2) Different factors contribute to the difference in energy efficiency among provinces in China.Generally speaking,the provinces can be divided into four main kinds which are energy input slack,human capital input slack,capital input slack as well as energy and human capital input slack.With the rapid growth of China' s economy,energy input and human capital input are the most popular factors leading to low efficiency.3) Spatial autocorrelation analysis demonstrates that there is significant agglomeration of energy efficiency,pure technical efficiency and scale efficiency amongst Chinese provinces.4) The cold and hot spots in terms of energy efficiency in China have shown regional differences from coastal to inland,and gradual decline from east region to central and west regions.Viewed from the decomposition of energy efficiency,the spatial structure and evolution of energy efficiency and pure technical efficiency are basically identical,while the scale efficiency showed significant difference.
energy efficiencyscale efficiencypure technical efficiencyDEA-ESDA
NETL
NSTL
万方数据
维普
