Research On The Heterogeneity Of The Population Flow Network Among Guangdong,Guangxi And Guizhou

With the accelerating process of regional integration,cities are no longer isolated markets and management hubs,they are in cooperation network through "flow space" to strengthen the city interaction,coordination with other nodes,establish their position in network,becoming the key to improving the capacity of urban development.As the core part of the "flow space",the population flow is one of the important transmission medium for spatial interaction among cities,and with the interregional high-speed rail network opening,population flowing space is expanding,flow rate increase,the connection degree between regional also significantly enhanced,together with autonomy flow of population enhancement makes microcosmic individual decisions become the important factors that affect the structure of population flow network,urban cooperative network faces new challenges in the process of balancing service individuals and optimizing regional division of labor.Based on this,the individual travel in high-speed network among Guangdong,Guangxi and Guizhou province according to their own desires,purpose matches cities' function to make travel decisions affect the network structure of high-speed population flow,for each node function division,intelligent planning high-speed layout is very important.In this paper,based on field investigation to obtain the population flow relational data,combing literature and theory,through the origin and destination of population flow and the frequency of the heterogeneous population flow among cities,construct a directed flow network based on high-speed rail,and combine the social network analysis method to measure the degree centrality,betweeness centrality,network density and core-periphery identification of its structural features.On this basis,take how microcosmic individual heterogeneity affect to macroscopic network structure with how microcosmic individual heterogeneity affect to macroscopic network structure for the study for the key research question,introducing the spatial lag model and the spatial error model to analyze the network results show that:(1)although the high-speed railway breaks the provincial administrative boundary and strengthens the trans-provinconnection strength and the core-periphery structure of the inner city of the network.Thecial movement,the interregional connectivity is weaker than the regional driving effect,and the outside contact function needs to be strengthened.At different levels,the inter-city interaction is unbalance,and the flow activity level decreases with the city level from high to low,and the polarization effect of the high level city is significant.High-speed rail has strengthened the inter-provincial business relationship and the demand for short trips,while the social ties represented by visiting relatives and friends have been active among different levels of cities in the province.(2)There is a negative correlation on population flow in the neighboring areas among Guangdong,Guangxi and Guizhou,exists "siphon effect" of the population flow,and the network is in the multi-core development stage.The whole network,business network,tourism network,and visiting friends and relatives network all present the core-periphery structure.In the heterogeneous network,the business network has the highest connection strength,the highest density and the best penetration,followed by the visiting friends and relatives network and tourism network.(3)At present,most of the non-core areas lack the attraction of human capital.Center of provincial capital city by high-speed rail to improve the function of regional conditions,strengthening the hub,consolidate the core-periphery structure of network and.has hindered the overall network and business network connectivity,inhibit the urban agglomerations overall network and business network density increase;(4)With the individual human capital for characterization of heterogeneity has significant effect in shaping the population flow network structure,namely:to engage in economic activities related occupation,schooling and income to increase network density,enhance cohesion,improve the activity of factor flow in the region and constructing the inner core city of the network have a significant impact.But the intensity and direction vary with the nature of the network.Based on the above conclusions,policy Suggestions are put forward to clarify the function division of urban functions,intelligent management of population flow,and to improve the vitality and efficiency of population flow network.