Network patterns and influence mechanisms of city linkages in the urban agglomeration of the Yangtze River Economic Belt:From the perspective of undertaking enterprises in high-speed railway station areas
High-speed railway station areas play an important role in promoting the integration of transportation,industry and urban development,and have become an important carrier for cities to generate economic ties and their spatial associations.This paper takes the five major urban agglomerations in the Yangtze River Economic Belt(YREB)as the research unit,constructs the affiliation network model from the perspective of"total-sub"enterprises between high-speed rail station areas and cities,adopts the methods of social network analysis and GIS spatial analysis to portray the affiliation network pattern of the urban agglomerations in the YREB in the perspective of the enterprises undertaking high-speed rail station areas,and further utilizes the geographic detector model to reveal the role mechanism of the network formation.The results found that:(1)The overall network of cities in the YREB shows a"multi-core radial"spatial pattern,with strong connectivity and concentration,obvious corridor effect,and the network in the central and western parts of the country is not developed enough.The network pattern is characterized by"dense in the east and sparse in the west";the characteristics of small groups in the network are more obvious,and the network characteristics of"inward connection and outward expansion"in the central urban agglomeration and"strong inside and weak outside"in the eastern and western urban agglomerations are obvious;(2)The inter-group network of the urban agglomerations in the YREB under the viewpoint of the high-speed railway station area undertaking enterprises is presented in the form of"inter-group network".(2)The inter-city network of the urban agglomerations from the perspective of enterprises receiving high-speed rail station areas shows a"bridge-crossing"linkage pattern,and the network pattern of inter-city links within the urban agglomerations shows"strong linkage","gradient linkage"and"neighboring linkage".(3)The spatial distribution of out-degree nodes of the urban association network from the perspective of the high-speed railway station area receiving enterprises is characterized by a pattern of"high-grade scattered dots,low-grade numerous",while the in-degree nodes are characterized by a pattern of"high-grade clusters,and low-grade clusters".High-grade clusters become pieces,and low-grade beads become lines;(4)The pattern of urban agglomeration association network under the perspective of high-speed rail station area receiving enterprises is affected by the interaction of five dimensional factors,namely,city level,station area business environment,station area infrastructure,station area development degree,and station-city linkage,among which,the factors such as internal accessibility,city level,station location,and government preferential policies have a significant influence on the urban agglomeration association network.Among them,internal accessibility,city grade,station location and governmental preferential policies play an obvious role in the formation of the network pattern of city connections in the high-speed railwaystation area.
high-speed rail station areaaffiliated enterprisescity linkage networkinfluence mechanismsYangtze River Economic Belt
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