Research On The Impact Of High-speed Railway On Service Industry Agglomeration And Its Impact Path

As a modern passenger transport mode with large volume and high efficiency,the driving effect of high-speed railway on economic development cannot be ignored.As an industry vigorously developed due to the upgrading of industrial structure at the present stage,service industry is the key research object in the field of industrial research.As an industry with people-centered organization and operation,the service industry is very vulnerable to the impact of personnel and information flow.The opening of high-speed railway greatly improves the spatial accessibility and speeds up the flow of elements required by the service industry.Therefore,the opening of high-speed railway will undoubtedly have a crucial impact on the development form of the service industry.Therefore,this paper associates the opening of high-speed railway with the development of service industry,analyzes the impact of the opening of high-speed railway on service industry agglomeration,focuses on the impact path of the opening of high-speed railway on service industry agglomeration,combines the industrial agglomeration theory and the new economic geography theory,puts forward assumptions on the basis of summarizing previous studies,and verifies the impact and impact path of the opening of high-speed railway theoretically and empirically,The impact paths include population and labor mobility,knowledge spillover effect,market potential and the copolymerization effect of service industry and manufacturing industry.Firstly,this paper analyzes the current situation of service industry agglomeration in 277 prefecture level cities in China through spatial Gini coefficient,Moran’s I index and Moran scatter diagram,which shows that the degree of service industry agglomeration in China is strengthening on the whole.In view of the impact of the opening of high-speed railway on the agglomeration of service industry,the empirical part of this paper selects the panel data of prefecture level cities in China from 2003 to 2019,and uses the matching tendency score multi period double difference(PSM-DID)model to make regression analysis and robustness test on all samples and cities with different population sizes;For the path of the impact of the opening of high-speed railway on the agglomeration of service industry,this paper uses the samples with score tendency matching to construct the stepwise regression model of intermediary effect,and carries out the regression coefficient test and Sobel test on the model.The empirical results of this paper show that:(1)the opening of high-speed railway promotes the agglomeration of service industry at the prefecture level;(2)The impact of the opening of high-speed railway on the agglomeration of service industry has the heterogeneity of urban population size.For cities with a population of less than 1 million,the opening of high-speed railway does not significantly promote the agglomeration of service industry.For cities with a population of more than 1 million,the opening of highspeed railway significantly promotes the agglomeration of service industry,among which cities with a population of more than 5 million have the strongest promotion effect;(3)There is an intermediary effect between the opening of high-speed railway and the agglomeration of service industry.The intermediary effect includes the opening of highspeed railway to promote the agglomeration of service industry by promoting the flow of population and labor force,knowledge spillover effect and enhancing the market potential of the city.The indirect effects of these three paths are 6.5%,16.0% and 43.6%respectively,The copolymerization of service industry and manufacturing industry does not constitute an intermediary effect.