Evaluation of Green Economic Efficiency and Regional Differences in a Region Based on Data Envelopment Analysis

Abstract

Green economic efficiency evaluation is an important part of sustainable economic development evaluation. Due to the large amount of data, the traditional green economy evaluation method has low accuracy and low efficiency. In order to solve this problem, this paper uses data envelopment analysis (DEA) to calculate the comprehensive ecological efficiency, pure technical efficiency and scale efficiency of cities at prefecture level and above in China from 2013 to 2019, and analyzes their spatial differentiation characteristics through exploratory spatial data analysis (ESDA). The results show that the ecological efficiency of Chinese cities in 2018 is generally at a low level, most of the cities are not effective, there is a strong spatial correlation, showing a pattern of scattered agglomeration. The average ecological efficiency of 2013-2019 shows a trend of first decrease, then increase and then decrease, and the ecological efficiency of Eastern, central and western regions is not completely consistent with the level of regional economic development.