The Development Bottleneck for Chang-Zhu-Tan Urban Agglomerations and Constructing Countermeasure Analysis on Sub-Urban Group

Chang-Zhu-Tan urban agglomerations include three core cities named as Changsha,Zhuzhou and Xiangtan.Although the three core cities are adjacent to each other in space,but in integration degree among the three cities is not high.It is necessary that Chang-Zhu-Tan urban agglomerations develop in accordance with themulti-core + multi-sub-coreandstep-by-stepdeveloping way.Chang-Zhu-Tan is the core of urban agglomeration,Yiyang,Pingxiang,Loudi is the middle layer of urban agglomerations,Yueyang,Changde,Shaoyang,and Hengyang is the perisphere layer for urban agglomeration.In order to constructing urban agglomeration,it is necessary to break the administrative divisions,and let Pingxiang which located in west Jiangxi be the member of Changzhutan agglomeration second layer,and let Yichun,Xinyu and Ji'an which located in west Jiangxi become the member of ChangzhuTang agglomeration's third layer,at the same time Changsha sub-group,Xiangtan sub-group,and Zhuzhou sub-group must also be improved.Three cities can efficiently interactive urban agglomeration can be shaped in this way.