The Impact Mechanism Of Digital Economy On Eco-Efficiency Of Resource-Based Cities

The high-quality development of resource-based cities is an important means to ensure resource and energy security and make up for the lack of power for transformation and development.Improving the eco-efficiency of resource-based cities in an all-round way is conducive to the coordinated development of resource-based cities ’ economy and ecological environment.The digital economy is based on modern information technologies such as the Internet,so it is helpful to achieve high-quality development and new urbanization of resource-based cities.It has strategic significance to explore how the digital economy can improve the ecological efficiency of resourcebased cities.Digital economy is based on modern information technologies such as the Internet.Exploring how to promote the eco-efficiency of resource-based cities through digital economy is of great significance for promoting the high-quality development of resource-based cities and the construction of new urbanization.Based on the panel data of 117 resource-based cities from 2011 to 2020,this thesis uses the entropy weightcatastrophe series method to measure the eco-efficiency of resource-based cities,analyzes its spatial and temporal evolution and spatial correlation characteristics,and uses spatial econometric model and intermediary effect model to explore the impact and mechanism of digital economy on the resource-based cities ’ eco-efficiency.On this basis,the regional heterogeneity analysis and growth cycle heterogeneity analysis of the mechanism are carried out.The results show that :(1)From a regional perspective,the eco-efficiency of resource-based cities increases slowly,showing a ladder-like distribution pattern from east to west,but the eco-efficiency of most cities is lower than the average level,and is still threatened.(2)From the perspective of spatial correlation,there is a significant positive spatial correlation in the eco-efficiency of resource-based cities,and the correlation is weakening year by year.The overall phenomenon of club convergence is shown.The spatial correlation types are mainly H-H and L-L agglomeration areas.In the later stage of development,some cities are separated from the overall trend,and the proximity effect is unstable.(3)The influence of digital economy on the eco-efficiency of resource-based cities is multidimensional,it not only has a direct impact on improving the eco-efficiency of resource-based cities,but also includes an indirect impact on improving the eco-efficiency of resource-based cities through technological innovation,and the mediating effect is 11.9764 %.(4)From the heterogeneity test,for the northern resource-based cities,digital economy can improve eco-efficiency through technological innovation.For mature resource-based cities and regenerative resourcebased cities,technological innovation plays an intermediary role in the process of digital economy promoting the eco-efficiency of resource-based cities.Accordingly,this thesis puts forward relevant policy suggestions from the aspects of promoting cooperation and coordination,accelerating digital transformation,increasing innovation investment,and guiding the sustainable development of resource-based cities.