The Research of Spatial Organization in Hunan Changsha-Zhuzhou-Xiangtan Urban Agglomeration

This paper mainly investigates the Hunan Changsha-Zhuzhou-Xiangtan urban agglomerations of space organizations which based on five elements,namely,node,access roads,flow,level and networks,respectively.According to qualitative and quantitative analysis,we have known that: The study of each node within city group reveals that,among the entire city group,Changsha is the primacy,and Changsha-Zhuzhou-Xiangtan City Group is the core area.Secondary cities include Yueyang,Changde,Yiyang,Loudi and Hengyang.City groups' land transport which uses the accessibility formula,its distribution is basically consistent,specifically,with Changsha-Zhuzhou-Xiangtan as the center,and gradually reduces to periphery in the ring's pattern.Changsha-Zhuzhou-Xiangtan urban agglomeration spatial factor concentrates and its distribution has the obvious spatial directive property in recent years.That is to say,spatial factor concentrates into the core area of Changsha-Zhuzhou-Xiangtan City Group.Analysis proves that the city group has shaped a comparatively mature hierarchy.At the end of this article,it put forwards basic ideas and suggestions about city group space organizations.