基于复杂网络的长江中游城市群人口迁徙网络空间结构

以2016年腾讯位置大数据人口迁徙数据为基础,通过节点指标、网络指标、空间结构三方面,分析长江中游城市群人口迁徙网络空间结构特征,得出主要结论:①通过节点对称性与节点重要度分析,得出城市群节点等级性明显。武汉城市圈节点等级联系特征为"强核心城市—边缘城市",环长株潭城市群为"核心城市—次级城市—边缘城市",环鄱阳湖城市群为"弱核心城市—边缘城市"+"非核心城市—边缘城市"。②通过平均点权与网络结构熵分析,得出城市群网络连通性存在差异。三子城市群分别表现出鲁棒性、持续性、脆弱性特征。③通过人口迁徙空间网络变迁图,分析城市群空间结构,得出各城市群空间结构呈现多样化。三子城市群空间结构分别呈现■+触角发散状""■+触角发散状""■+触角发散状"。

Study on Spatial Structure of Population Migration Network of Urban Agglomeration in the Middle Yangtze River Based on Complex Network

Based on the population migration data of Tencent location big data in 2016,this paper analyses the spatial structure characteristics of population migration network in the middle reaches of the Yangtze River through three aspects of node index,network index and spatial structure,and draws the main conclusions:1)Through the analysis of node symmetry and node importance,it is concluded that the node hierarchy of urban agglomeration is obvious.The characteristics of node hierarchy in Wuhan urban agglomeration are"strong core city-fringe city",Changsha-ZhuzhouXiangtan Urban Agglomeration are"core city-secondary city-fringe city"and Poyang Lake Urban Agglomeration are"weak core city-fringe city"+"non-core city-fringe city".2)Through the analysis of average point weight and network structure entropy,it is concluded that there are differences in network connectivity of urban agglomerations.Three suburban agglomerations show robustness,sustainability and vulnerability respectively.3)By analyzing the spatial structure of urban agglomerations through the spatial network transition map of population migration,it is concluded that the spatial structure of urban agglomerations is diversified.The spatial structure of the three sub-urban agglomerations presents"■+antenna divergence","■+antenna divergence"and"■+antenna divergence".