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首页> 外文期刊>Journal of geovisualization and spatial analysis >Investigating Intra-urban Functional Polycentricity from a Linkage Perspective: the Case of Changsha, China
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Investigating Intra-urban Functional Polycentricity from a Linkage Perspective: the Case of Changsha, China

机译：Investigating Intra-urban Functional Polycentricity from a Linkage Perspective: the Case of Changsha, China

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摘要

Polycentric urban development has become a prominent phenomenon in China since many cities advocate the strategy by revising spatial planning. Existing research mainly focuses on quantifying functionally polycentric degrees and inter-city differences based on rank-size analysis. Still, it seldom elaborates dynamic functional linkages at the intra-urban scale based on flow analysis. This study fills the gap by proposing a methodological framework to measure functional polycentricity using link strength, direction, and dynamics. Based on social network analysis of taxi trajectories, we reveal the spatial structure by link strength and temporal patterns of link direction and link dynamics. The case study in Changsha discloses that the city has a four-level polycentric system compared with the three-level one proposed in the master planning. Link direction result demonstrates a centrifugal pattern from Main Center towards the periphery, reflecting the mediation role of urban centers in the network. Link dynamics result indicates the single function of urban subcenters/clusters for residence or employment, reflecting insufficient public services. Thus, the results provide meaningful reflections on polycentric planning and policy-making.

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