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在国家重点实施长江经济带战略的背景下,为了探究长江中游城市群内部结构、城市间的相互作用,本文基于引力模型和潜力模型,得到长江中游城市群2013年31市之间的空间相互作用强度和2004—2013年的潜力值.在此基础上,绘制网络结构图并进行网络中心性和凝聚子群分析.结果发现:武汉城市群和长株潭城市群相互作用值普遍较高,远高于江西省的环鄱阳湖城市群;近10年潜力值演变中,武汉一直居于首位,紧随其后的是长沙、黄冈等市,城市集聚能力较强;景德镇、鹰潭、天门等边缘城市则一直居后,集聚能力较弱;长江中游城市群存在明显的网络结构,城市中心呈现“两强一弱三核心”的结构特征,武汉、长沙中心辐射作用较强;城市群内小团体现象比较明显,且存在中心与边缘现象,城市群凝聚力仍有待加强.
In order to explore the internal structure and inter-city interaction of the urban agglomerations in the middle reaches of the Yangtze River under the background of the state’s key strategy of implementing the Yangtze River economic belt, based on the gravity model and the potential model, the spatial interactions among the 31 cities in the middle reaches of the Yangtze River in 2013 were obtained. Strength and potential value from 2004 to 2013. On this basis, draw the network structure diagram and network center and cohesion subgroup analysis.The results show that the interaction values between Wuhan urban agglomeration and Chang-Zhu-Tan urban agglomeration are generally high Which is higher than that of the Poyang Lake urban agglomeration in Jiangxi Province. In the past 10 years, Wuhan has been the top one in terms of potential value evolution, followed by Changsha and Huanggang cities, with strong agglomeration ability in the cities. The marginal cities such as Jingdezhen, Yingtan and Tianmen The urban agglomeration in the middle reaches of the Yangtze River has obvious network structure, the city center shows the structural features of “two strong and one weak triple core”, and the radiation in Wuhan and Changsha centers is strong; The group phenomenon is obvious, and there are the phenomena of center and periphery. The cohesion of urban agglomerations still needs to be strengthened.