In order to clarify the interaction mechanism between metro and urban development, the relationship between spatial changes of the network and population changes quantitatively are analyzed. According to city planning and metro network planning, the population size and lines' scale of each zone of different time nodes are counted in the model. Analyze the spatial autocorrelation of population and network scale with Moran'I model. Through modeling analysis, the spatial structure and population distribution characteristics of different term have significant spatial autocorrelation characteristics. The research results show that urban spatial development and urban population changes are the main relevant factors of traffic demand, which affecting rail transit network planning; otherwise, rail transit furtherly supports urban space expansion and promotes the development of rail transit. The conclusions of this study can be used as the basis for line network planning, main passenger flow corridors, and selection of transit mode.

CICTP