Research on Green Economic Efficiency Measurement and Influencing Factors in Chengdu-Chongqing Twin-City Economic Circle--Analysis Based on Super-Efficient SBM and Tobit Model

Abstract

Based on the panel data of 16 cities in the Chengdu-Chongqing region from 2005 to 2020, this paper measures the green economic efficiency of each city in the Chengdu-Chongqing region using the super-efficient SBM model that takes into account non-desired outputs, and analyses the influencing factors of green economic efficiency in the Chengdu-Chongqing region using the Tobit model. The results show that the overall green economic efficiency of the Chengdu-Chongqing region is at a moderate level, but shows a fluctuating upward trend with the change of time. From the perspective of the influencing factors: the level of economic development, the level of science and technology, and the endowment structure have a significant positive contribution to the green economic efficiency of the Chengdu-Chongqing region; the environmental regulation does not have a significant contribution to the green economic efficiency due to the differences between cities; the industrial structure dominated by the secondary industry and the urbanisation rate have a significant negative inhibiting effect.