关键词:  

Abstract: Based on the perspective of economic connection, the Spatial Interaction Model, Social Network Analysis (SNA) and GIS spatial analysis are used to study the regional network structure characteristics of Pan Yangtze River Delta.Research shows: Overall, the Pan Yangtze River Delta regional spatial network presents a spatial structure of "A core and Multi-center" with Shanghai as the core, with Nanjing, Hangzhou and Hefei as the multi-center.In the Pan Yangtze River Delta, the density of the regional spatial network is low, the inter-city links are more weak and the urban functions are not clear.The results of Multiple Central Analysis show that the polarization and diffusion effects of Shanghai, Nanjing, Hangzhou and Hefei are significant, but the secondary area is not fully integrated.The Pan Yangtze region can be divided into four cohesive subgroups, and the small groups within the subgroups are obvious, and the economic link between the cities is stronger in subgroups.At the same time, the Pan Yangtze River Delta regional integration trend is accelerated, the network characteristics began to appear.

Key words: