Research On The Impact Of Smart City Development On The Quality Of Economic Development

China is currently in a period of transition from extensive economic growth model to intensive economic growth model,and is also in a period of constant pursuit of high-quality economic development.Against this background,it is an urgent need for China’s economy to develop with a higher technological level,less pollution emissions,better resource allocation and faster economic growth.The smart city development strategy is one of the policy means that can effectively meet the development needs.Smart cities plays all-important role in the high-quality development of cities.So this paper mainly studies the policy and spatial effects of smart city on high-quality urban development through empirical analysis,and finally draws reasonable conclusions and targeted recommendations.It not only provides theoretical basis and reference for accelerating the development of smart cities in the future,but also for the high-quality development of China’s economy.First of all,this paper combs the relevant literature on smart cities,highquality development and the impact of smart cities on high-quality development,and finds that the indicator of green total factor productivity(GTFP)can well represent the high-quality development of the economy.After that,it dee ply studied the development of the indicator system,selected appropriate variables from the five directions of capital input,energy input,labor input,expected output and unexpected output,and measured the green total factor productivity with the help of Maxdea software.Then,taking 163 prefecture-level cities from 2009 to 2018 as the research object,the general panel regression and panel space econometric analysis of smart city policy effects are carried out to find out the specific policy effects,and put forward reasonable suggestions.The research conclusions are as follows:(1)According to the empirical analysis of double difference method,the regression results show that the development of smart cities has significantly improved the green total factor productivity by 3.48%.Through the parallel trend test,the PSM-DID method,the placebo test and a series of tests excluding other policy interference,the robustness of the policy effect of smart cities has been proved,and the results do not change the original conclusions.(2)In the path analysis,it is found that the development of smart cities,together with environmental regulation,technological innovation and industrial structure optimization,has a significant positive effect on the environment-friendly total factor productivity of cities.In addition,smartcity development has the greatest effect on the improvement of green total factor productivity through the joint effect of industrial structure optimization.(3)In the spatial econometric analysis,it is found that the environment-friendly total factor productivity of each city has a spatial correlation.The local spatial correlation analysis found that the eastern cities generally have the phenomenon of "high high" clustering,while the western cities have the phenomenon of "low low" clustering,and the experimental unit has significant positive spatial spillover effect on the high-quality development of the surrounding cities.According to the research conclusions,the following suggestions are put forward for the development and high-quality development of smart cities:(1)Continue to implement the pilot development of smart cities and strive to achieve the national coverage of policies.(2)Further implement the innovationdriven development strategy.(3)Implement the sustainable development strate gy.(4)From the perspective of top-level design,we should adhere to adjustin gmeasures to local conditions and promote high-quality development of the region as a whole.