关键词: 长三角城市群, 空间重构, 信息辐射模型, 复杂网络

Abstract:

The information radiation space of Yangtze River urban agglomeration shows complex networks, with a high degree of network density and connectedness, and a low degree of hierarchy.Besides, space reconstruction has began to appear.In the urban agglomeration, the number of high-centrality cities is greater than the number of low-centrality cities, and there is an obvious effect of network linkage.In addition, the information structure hole overall presents an open network structure with Shanghai, Nanjing, Hangzhou, Suzhou, Wuxi and Ningbo as the centers.The degree of restriction in Suqian, Taizhou and Quzhou is relatively high, but the gap with the core cities is shrinking.The entire information-associated network can be divided into 8 subgroups, based on which the Yangtze River urban agglomeration can be restructured into 4 main “clusterlike”spatial organization, including Radiation Clusters （subgroups 1, 2）, Intermediate Cluster （subgroup 3）, Jumping Clusters （subgroups 4, four 5） and Primary Clusters （subgroups 6,7,8）.

Key words: Yangtze River urban agglomeration, space reconstruction, radiation model, complex networks