高速铁路对城市空间结构的影响及机制研究OA

To explore the role of high speed railway in the evolution of urban spatial patterns,this paper constructed the urban sprawl index that characterizes the urban spatial structure using nighttime lighting data and LandScan population distribution data,and empirically examined the impact of high speed railway on the urban spatial structure and its working mechanism by employing the multi-period DID model and the instrumental variable method.The study finds that the opening of high speed railway significantly promotes the decentralization of urban spatial structure,and this conclusion still holds after considering the endogeneity problem and a series of robustness tests.The heterogeneity analysis shows that the reshaping effect of high speed railway on the urban spatial structure is found more significant in small and medium-sized cities and cities located outside the three major urban agglomerations.The mechanism analysis shows that high speed railway can lead to the decentralization of urban space by promoting the advancing trend of industrial structure and the expansion of built-up areas,and the labor agglomeration has a masking effect between high speed railway and the urban spatial structure.The research conclusion is of great significance to promoting the construction of high speed railway and guiding the well-ordered development of urban spatial structure.