长株潭城镇体系的形成机制研究

长株潭地区现有3个地级市、4个县级市、177个建制镇及360多个集镇，是湖南省城镇体系发育水平最高的区域，也是全国“十五”期间重点引导和培育的七大城镇密集区之一。本定性分析了政策机制、乡镇企拥与商贸市场集聚布局机制对长株潭城镇体系的影响，采用回归分析法、关联分析及经济联系强度计量模型定量研究了投资机制、辐射机制在长株潭城镇体系形成中的作用。进入21世纪，长株潭城镇体系的发展进入了一个新的阶段，其发展成效的好坏在很大程度上取决于上述机制的综合作用。为促进长株潭城镇体系的优化建设，应在进一步完善各单项机制的同时，搞好各机制之间的相互协调，提高各机制综合运作的组合效应。

A STUDY ON THE FORM MECHANISM OF THE URBAN SYSTEM IN CHANGSHA-ZHUZHOU-XIANGTAN

Chang-Zhu-Tan area now has 3 prefectural cities, 4 county cities, 177 designated towns and more than 360 towns. This area is one of which the development level of urban system is the highest in Hunan Province, and also is one of the largest seven city-intensive districts which are guided and developed focally during the time of the 10th five-year-planning in China. This paper qualitatively analyses the influence of policy mechanism, gather distribution of township enterprises and market building to Chang-Zhu-Tan area's urban system. By means of regression analyse and relation analyse, and by setting up a model which is used to calculate economic relation strength, this paper quanititatively researches the function of investment mechanism, radiation mechanism to Chang-Zhu-Tan area's urban system. The countermeasures we should take is as follows:On the basis of completing of the Changsha-Xiangtan Expressway, the Changsha-Liuyang Expressway and the Changsha-Changde Expressway, centre on remoulding the Liuyang-Calin Railway Line, the Zhegan-Xiangqian Railway Line, the National Road-106 and the National Road-320. Improve traffic conditions of the west axis and the south axis. According to the requirements of integration programme of traffic network, complete expressway and light railway in the shape of Y as soom as possible among Changsha, Zhuzhou and XiangTan; make the urban districts of 3 cities to be a closer city circle.As for the regional policy, carry out the strategic decision which has been made by Provincial Party Committee and Government to accelerate the economic integration of Chang-Zhu-Tan; accelerate the accumulation of the productive factors such as talent, capital, technology and information. As for the census register policy and the adjustment of administrative divisions, make rural population gather towads vital designated towns and raise the large-scale returns; turn You County into a city so as to change the irrational pattern that the south area of the east axis has no secondary central city.Intensify the radiation function of Changsha; perform fully the faucet function of Changsha as well as the key role; especially intensify the new polarization effect which has three features:a) take the technology-intensive industry as the nucleus. b) on the premise that the institution innovation .c) the accumulation of large-scale capital, technology and talent.