Impact mechanism of high-speed rail network on spatial structure of urban agglomerations:From the perspective of factor transfer and sharing
The high-speed rail network exerts a multifaceted influence on the spatial structure of urban ag-glomerations.While the reduced cost of regional factor flows has the potential toenhance overall economic ef-ficiency,it also reinforces the advantages of central towns,leading to a"siphon effect"on surrounding small and medium-sized cities,exacerbating imbalances in urban development.The conventional"Land-use Trans-portation Interaction"theory,centered on location accessibility,falls short in explaining the intricate network effects of high-speed rail on urban agglomeration spatial structures.This article adopts an approach grounded in the"Space of Flows"paradigm,considering both"transfer"(exclusive of time and space,e.g.,capital and labor)and"sharing"(non-exclusive of time and space,e.g.,information and technology)effects of factor flows.It analyzes the cascading effects of the"high-speed rail network-factor transfer and sharing-urban ag-glomeration spatial structure".Using Wuhan Urban Agglomeration as a case study,the research employs big spatial data(i.e.,population migration)extracted from network location-based services to identify and measure factor transfer and sharing among cities and towns.Then,a set of spatial models and"What-if'analyses were applied to demonstrate the impact of the high-speed rail network on factor transfer,sharing,and the overall spa-tial structure of the urban agglomeration.The findings reveal a heterogeneous impact of high-speed rail devel-opment on the spatial structure of Wuhan Urban Agglomeration.The high-speed rail development propels labor transfer from surrounding small and medium-sized towns to central cities,creating a discernible polarizing ef-fect on Wuhan's economy,and presenting challenges to its neighboring cities'economic development.Simul-taneously,high-speed rail facilitates the dissemination of information and technology from central cities to peripheral areas,offering opportunities for regional economic transformation.This study overcomes the short-comings of previous research,which have often oversimplified the interactions between cities.It established a unified analytical framework to explain the impact of the high-speed rail networks on the spatial structure of urban agglomerations.The research results aim to serve as a policy reference for optimizing the spatial struc-ture of urban agglomerations.
high-speed railwayelement flowtransfer and sharingurban agglomeration spatial structure
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