Cao Zhejing

Keywords： Commercial Center; Transport Center; Complex Network Analysis; Transit Network and Stations; Urban Morphology

Abstract：

The land use of transit stations needs to balance with the function of nodes in transit networks. In this study we explored the relationship between Tokyo urban commercial centers and transportation centers through the complex network analysis, and analyzed its mechanism, principals, implications. We confirmed a “small world” phenomenon in Tokyo transit network by testing its average path length and clustering coefficient. We calculated the degree centrality, betweenness centrality, and closeness centrality of Tokyo transit network, and compared them with the location of commercial centers. The results revealed that the major commercial center in Tokyo overlapped with the closeness center in the transit network due to commercial facilities’ high dependence on transportation accessibility. Three sub-commercial centers overlapped with the degree centers and the betweenness centers in the transit network, because a large passenger volume at these transferring stations brought about high commercial value. Local commercial centers tended to locate at where was connected by express lines to other urban areas. Also, in examining the development principals of how Tokyo commercial centers’ morphology and land use were coordinated with stations’ node function, we found that Tokyo major commercial center was covered by the dense transit network which alleviated the pressure of highdensity land development; three sub-commercial centers were filled with complex buildings that contained transit transfer platforms and were connected to the development around nearby stations; local commercial centers had a composite form of concentrated development and radial connections to neighboring communities. The case study of Tokyo is informative for China’s integrated development of transit network and urban morphology in big cities. This includes constructing multiple layers of urban transit networks, combining major transport hubs with commercial centers, creating continuous pedestrian network at major transferring stations and integrating it with commercial space, optimizing the land development around suburban transit lines, and facilitating the public private participations.

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