THE DIFFERENCES AND CONNECTIONS BETWEEN HIGH-SPEED RAIL FLOW AND INFORMATION FLOW IN PROMOTING THE EVOLUTION OF URBAN CROSS-BORDER NETWORKS IN THE BOHAI RIM REGION
Flow element is the leading force of regional integration development.High-speed rail flow and in-formation flow are the main material flow pattern and virtual flow pattern of flow space,which have differ-ent effects on urban network pattern.Based on the high-speed rail passenger frequency and Baidu index data in 2010,2015 and 2020,this paper uses the complex network model to describe the characteristics of urban cross-border network changes in the Bohai Rim region in recent years.The results show that:1)From 2010 to 2020,the intensity of urban linkages from the perspective of high-speed rail flow and information flow has increased significantly,both of them show a"convergence"evolution trend,jointly promoting the forma-tion of five growth poles in the Bohai Rim region.2)There are differences in the characteristics of urban cross-border connections.3)High-speed rail and information have different regional organizational struc-tures.4)Under the action of flow factors,the Bohai Rim region has realized the coupling development of"point axis-group area".
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