Study On The Influence Effect Of Green Low-carbon Development Based On The Comparison Between Low-carbon Pilot Cities And Non-pilot Cities

The goal of "double carbon" and the strategic transformation of high-quality economic development mean that the development of green and low-carbon cities is imminent.Although the rapid development of urbanization has promoted the rapid growth of China’s economy and the improvement of residents’ living standards,it is accompanied by a series of environmental problems such as energy consumption,air pollution and increased carbon emissions.After about ten years’ development,low-carbon pilot cities have gradually become the main carrier of energy conservation,emission reduction and environmental pollution reduction in China.At the same time,their green and low-carbon transformation experience is the key force to promote the green and low-carbon development of cities in China.However,the implementation of lowcarbon policies does not mean that all low-carbon pilot cities have achieved remarkable results.Whether low-carbon pilot policies can promote urban green and low-carbon transformation is the key to measure the implementation effect of low-carbon pilot policies.In order to clarify the factual characteristics of China’s urban green and low-carbon development,the implementation effect of low-carbon pilot policies and regional differences,based on the analysis of urban green and low-carbon development,this paper selects three levels of indicators of green,low-carbon and high-quality development,constructs DEA-SBM model,quantitatively measures the green and low-carbon development efficiency of 244 prefecturelevel cities from 2003 to 2020,and on the basis of overall analysis,carries out the green and low-carbon development efficiency of low-carbon pilot cities and non-low-carbon pilot cities.On this basis,a multi-time DID model is constructed to quantitatively analyze the overall and regional heterogeneity of the impact of low-carbon pilot policies on urban green and low-carbon development,and analyze the significant factors such as industrial structure and energy consumption,and then put forward suggestions for improving urban green and low-carbon development.The research draws the following conclusions:(1)China’s urban green and low-carbon development as a whole can be divided into three stages: significant rising stage(2003-2006),fluctuating rising stage(2007-2016)and sharp rising followed by sharp falling stage(2017-2020).Through efficiency decomposition,it is concluded that scale efficiency is the main factor affecting the green and low-carbon development of cities at present.Comparing low-carbon pilot cities with non-low-carbon pilot cities,the green and low-carbon development efficiency of non-low-carbon pilot cities is higher than that of low-carbon pilot cities,but the improvement rate of green and low-carbon development efficiency is lower than that of low-carbon pilot cities,and the green and lowcarbon development efficiency and its improvement rate of low-carbon pilot cities are higher than that of the second batch and the third batch.(2)The low-carbon pilot policy has a significant role in promoting the green and lowcarbon development of the city.In addition,the level of human capital has a more significant role in promoting the green and low-carbon development over time,while the energy consumption has been increasing year by year,and the industrial structure has been promoted first and then inhibited.The level of informatization has only promoted the green and lowcarbon development of the city since 2011.(3)From the perspective of regional heterogeneity,the green and low-carbon development efficiency of low-carbon pilot cities presents the phenomenon that the west > the east > the middle.The low-carbon pilot policies only promote the green and low-carbon development of pilot cities in the east and west,but have no significant impact on the middle cities.The empirical analysis results show that the low-carbon pilot policy promotes the green and lowcarbon development of eastern cities more than western cities.As far as the significant influencing factors are concerned,eastern cities should pay more attention to the improvement of energy consumption structure and the improvement of informatization level.The energy consumption structure of central cities is the key factor restricting their green and low-carbon development.For western cities,the improvement of human capital and urbanization level is the main driving force for their green and low-carbon development.