Multidimension Feature Of City Agglomeration Network And Interaction Among Different Dimensions

Urban agglomeration is the main form of Chinese urbanization pattern,and it is a signifycant carrier of competitiveness improvement of Chinese cities.With the improvement of urban agglomeration,reciprocities between cities about economy,society,culture,technology,transporttation and other aspects has strengthened,and city connection within urban agglomeration have been characterized by networknization more noticeably.This paper aims to analyze multidimensional feature of city network,contribution differences relation between different dimensions,which enrich and deepen city network theory.Based on the theory of urban agglomeration evolution and city network,the concept of multidimension feature of city network has been promoted,and feature and content of economic,transportation,information,demographic dimension city network has been discussed.Enterprise office location information,bus and train schedules data,baidu index and intercity migration data have been used to build multi dimension city network of Pearl River Delta urban agglomeration,Yangtze River Delta urban agglomeration and Beijing-Tianjin-Hebei urban agglomeration.Social network analysis method,exponential random graph models and other methods have been used to analyze structural feature and relation of multidimensional network.The result suggests that urban hierarchy results from city network vison and city attribution vison are similar.Regarding to central cities,diffusion effect is stronger in economic,transporttation and informational network,while agglomeration effect is stronger in population network.Structural feature of economy,transportation and information network are similar,while structural feature of population network is peculiar.Economy and transportation network contribute most to synthetical city network.