Research on Spatial Interaction of the Urban Agglomeration in the Middle Reaches of the Yangtze River
使用引力模型计算长江中游城市群各城市的综合实力和交通距离，分析空间相互作用的水平、影响因素及机制，发现整体水平低且差异大，武汉和长沙的中心作用明显。
The gravity model was used in the empirical research on spatial interaction of the urban agglomeration in the middle reaches of the yangtze river.By the calculation of city's comprehensive strength and inter city's traffic distance, this paper finally got the scores in the spatial interaction of the urban agglomeration in the middle reaches of the yangtze river. On this basis,the affecting factors and mechanism of spatial interaction of the urban agglomeration in the middle reaches of the yangtze river was analysed from two aspects:comprehensive strength of the urban agglomeration and orientation of spatial interaction. On the basis of comprehensive analysis,it was concluded that the level of the urban agglomeration's spatial interaction was low and the differences in the level of spatial interaction between each city and the urban agglomeration was significant,the spatial interaction's network of the urban agglomeration mainly was radial, Wuhan and Changsha's central role in the area was obvious,the Wuhan city circle and the ring of Changsha Zhuzhou Xiangtan city group was relative mature compared with the Poyang Lake city group,and that between this three second level city groups,the level of spatial interaction between the Wuhan city circle and the ring of Changsha Zhuzhou Xiangtan city group was highest,and a belt of high levels' spatial interaction came into being along the Beijing Guangzhou Railway-the Beijing Zhuhai expressway.