The Beijing-Shanghai High-Speed Railway Opened To The Productive Service Industry Of Cities Along The Line Agglomeration Of Research

The Beijing-Shanghai high-speed railway is one of the most important high-speed railways in the eastern region,and its opening is of great significance to the economic development of the regions along the line.This paper selects the prefecture-level cities in the provinces where the Beijing-Shanghai high-speed railway was opened from 2004 to 2019 as the research object,and analyzes the impact of its opening on the agglomeration of producer services in the areas along the line.In the theoretical analysis part,this paper analyzes agglomeration by combining location theory,new economic geography and industrial agglomeration and diffusion theory.The intensification effect and other factors cause the flow of production factors in cities along the high-speed rail line,and through economies of scale,the opportunity cost is reduced to cause economic "aggregation" or "dispersion".In order to analyze whether the opening of the Beijing-Shanghai high-speed railway will "aggregate" or "scatter" the producer service industry of cities along the line? This paper conducts an empirical study.First,the propensity score matching method is used to match the data of the experimental group and the control group to reduce standardized differences and make the results more accurate.Then,on the basis of matching,the double difference method is used to analyze the net effect of the opening of the Beijing-Shanghai high-speed railway on the economic agglomeration of cities along the line,and analyze its dynamic effect.In order to prove the robustness of the results of this paper,this paper adopts the method of changing the explained variables,changing the matching method,changing the time bandwidth,changing the policy implementation year,and changing the research samples to test the robustness of the results,all of which show that the results of this paper are robust.Due to the size of cities and the differences in the agglomeration of various sub-industries of producer services,this paper analyzes the heterogeneity of city scale and sub-industries.Through the above theoretical and empirical analysis,the paper mainly draws the following conclusions: First,the empirical research in this paper proves that the opening of the Beijing-Shanghai high-speed railway can significantly promote the agglomeration of producer services in cities along the route,and in the dynamic effect analysis,it is shown that the first increase The U-shaped trend of falling and rising again,this trend disappeared after the third year after the opening of the Beijing-Shanghai high-speed railway.Second,the opening of the Beijing-Shanghai high-speed railway has heterogeneity in the agglomeration of producer services in different cities and industries,mainly as follows: it has a significant effect on promoting the agglomeration of producer services in Type I large cities,while for small and medium-sized cities And type II large cities did not show a significant promoting or inhibiting effect;for each sub-sector of the producer service industry,the opening of the Beijing-Shanghai high-speed railway significantly promoted the agglomeration of the financial industry.On the contrary,it has a significant negative effect on transportation,warehousing and postal industry and real estate industry.For information transmission,computer services and software,leasing and business services,scientific research and technical services,there is no significant role.In response to the above conclusions,this paper gives the following policy inspirations: first,continuously improve the high-speed rail network and rationally arrange high-speed rail stations;second,plan the advantages brought by the opening of high-speed rail in a targeted manner,make overall planning,and promote the coordinated development of various industries in cities along the line;Third,formulate talent attraction policies to provide a reserve army of talents for the development of productive service industries;fourth,cities that have not yet opened high-speed rail must find their own absolute and comparative advantages to avoid resource loss and stagnation of urban development.