Aiming at addressing the unbalanced development status of urban agglomeration rail transit planning and various elements within urban agglomeration,a fractal dimension coordination index model of urban agglomeration rail transit based on fractal theory from the macro level is established to provide a reference for the comprehensive and coordinated development of urban agglomeration.Integrated composite indicators of transit network length-population size and transit network length-economic volume are used as the model parameter of rail transit coordination to quantitatively characterize the overall coordination of rail transit in urban agglomerations.Further descriptive statistical analysis is carried out using examples of urban agglomerations in the Yangtze River Delta,Beijing-Tianjin-Hebei and Guangdong-Hong Kong-Macao Greater Bay Area,and the coordination of rail transit development in typical urban agglomerations are revealed from multiple perspectives.The results show that the network length,population size and economic volume are cohesively distributed around the geometric center of the spatial surface area,with distinct central tendency and dispersion around the center.The rail transit coordination index of the Yangtze River Delta is 0.94,which reflects the synchronous development trend of the transit network length,population size and economic volume of the urban agglomeration as well as a distinct relative equilibrium.Beijing-Tianjin-Hebei rail transit coordination index and Guangdong-Hong Kong-Macao Greater Bay Area rail transit coordination index are 1.12 and 0.74,respectively,indicating a lack of balance in development between the transit network and the internal space of the urban agglomerations,which suggests that both regions are relatively lagging behind in terms of economic volume and population size.
urban agglomeration rail transitcoordinationfractal theorymulti-perspective association
NETL
NSTL
万方数据
