The Influence Of Infrastructures On Urban Economic Development With Spatial Econometrics

The acceleration of urbanization has promoted the rapid flow of elements within the space,the free flow of human,material and capital,and the spatial overflow of knowledge,technology and innovation has formed the resultant force and power of urban economic development.Traditional econometrics method of the research on the spatial effect of infrastructure to urban economic development did not make a complete analysis,Based on the spatial correlation and spatial heterogeneity,under the perspective of Chinese cities as the research object,through the analysis of the spatial visualization,spatial durbin model,threshold panel model to draw research conclusions.This paper studies the impact of infrastructure on urban economic development from three aspects: spatial effect analysis,spatial spillover and competition effect measurement,and non-linear relationship analysis of infrastructure on urban economic development,which is of great significance for optimizing public investment and accurate allocation of resources by urban governments.Spatial effect including spatial correlation and spatial heterogeneity,spatial correlation is embodied in China's high-high and low-low spatial agglomeration phenomenon.High-high concentration,such as Yangtze river delta,the pearl river delta,hu-bao-e and shandong peninsula urban agglomerations,low-low concentration distribution in embodied in the central plains city and city in southwest China,the distribution of urban agglomeration,strewn at order have send to form the spatial heterogeneity.In cities as research scale,economic infrastructure and social infrastructure have a spatial spillover effect on the city's economic development,among them,the spatial spillover effect of education infrastructure which can form the cultural soft power is greater than transportation,telecommunication,and health infrastructure.Public capital and population density have a space competition effect on the city's economic development,form the shadow agglomeration.In contrast ordinary panel model(without considering the spatial correlation),ordinary panel will overestimate the influence of infrastructure to urban economic development and underestimate the public capital and population density of the elasticity of the city's economic development.The influence factors which have spatial spillover effect has a positive feedback effect,and The influence factors which have spatial competition effect has a negative feedback effect.Found from the threshold panel model,the economic and social infrastructure's influence on the city's economic development is non-linear and change with the change of urban economic scale,in the early economic development,education has the biggest influence on urban economy.As further development of the city,medical and telecommunication infrastructure significantly effect on the economy,when the urban economy further deepening,medical infrastructure to the elasticity of the city's economic development is the largest,It reflects the "positive N" influence mechanism of educational infrastructure on economic development,the "reverse U" influence mechanism of telecommunications infrastructure,the direct ratio of medical infrastructure to urban economic scale,and the inverse ratio of transportation infrastructure to urban economic scale.