Coupling Analysis of Economic and Traffic Flow Centrality in Urban Agglomeration Network

Transportation and economy are crucial to the development of urban agglomerations. This paper introduces flow into the centrality index and analyzes the spatial characteristics of China’s urban agglomeration network. According to the flow centrality index, a coupling coordination model is constructed to study the interaction between transportation network and economic network. The results show that: (1) aviation network shows the characteristics of “hub-and-spoke”; (2) coupling coordination between high-speed rail network and economic network within the Beijing-Tianjin-Hebei urban agglomeration is highest, the value is 0.86. Coupling coordination between aviation network and economic network of the Yangtze River Delta urban agglomeration is highest, the value is 0.81; and (3) compared with high-speed rail network, coupling coordination between aviation network and economic network of most urban agglomerations is higher.