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Articles | Volume XLI-B6
https://doi.org/10.5194/isprs-archives-XLI-B6-275-2016
https://doi.org/10.5194/isprs-archives-XLI-B6-275-2016
17 Jun 2016
 | 17 Jun 2016

MEASURING POLYCENTRICITY OF MEGA-CITY REGIONS IN CHINA BASED ON THE INTERCITY MIGRATION FLOWS

Xiaoyan Mu and Anthony G. O. Yeh

Keywords: Migration Flows, Mega-city Region, Polycentricity, Chinese City, Social Media Data

Abstract. This paper uses the intercity migration flows to examine relations between Chinese cities, identify the important mega-city regions and measure each region's polycentricity from an interaction perspective. Data set contains the long-term residential migration trajectories of three million Sina weibo users across 345 cities. Cities with close connectivity deployed around one or several mega cities are identified as mega-city regions. Features of the mega-city regions are characterized by the strength of migration flows, density of connections, and regional migration patterns. The results show that the disparities exist in different mega-city regions; most mega-city regions are lack of polycentricity.