Abstract
Urban agglomeration is a spatial form of highly developed comprehensive cities and an important driving force for regional economic development. Based on the data of highways, regular-speed trains, high-speed trains and Baidu index data among 9 cities in the Pearl River Delta, this paper uses spatial visualization and social network analysis to study the spatial connections and network patterns of urban agglomerations from multi-factor flows. The results show that the spatial connection between cities in the Pearl River Delta mainly radiates outward from Guangzhou, Shenzhen and Dongguan, and connects with the network formed by secondary cities such as Foshan, Huizhou and Jiangmen. A multi-core development urban network pattern is formed by an absolute core circle and a peripheral low-density circle. The core circle is consist of Guangzhou-Shenzhen-Dongguan, and the low-density circle is consist of 6 city nodes with low degree value. The development of regional integration can strengthen the cooperation and exchange among cities, and it also can optimize the spatial structure of the urban agglomeration network.
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