Research On The Mechanism Of Spatial Planning To Regional~integrated Development In Changsha~Zhuzhou~Xiangtan City Cluster

With constantly strengthened interaction among regions,city groups have become main carriers for the development of regional integration in the process of world urbanization.City groups are not only a typical regional and spatial combination of spatial expansion and evolution,but also an advanced form of regional division of labor and cooperation.In the process of reciprocal interchange of capital flow,technology flow and information flow among neighboring cities,single ~center or multi~center metropolitan areas,urban circles or city groups are gradually formed and turn into the primary form of the development of regional integration.As an important node of city groups in the middle reaches of the Yangtze River,Changsha~Zhuzhou~Xiangtan city group is the core region for the comprehensive development of Hunan Province.Since China approved Changsha ~Zhuzhou~Xiangtan city group as “National Resource~saving and Environment~friendly Society Building Integrated Support Reform Pilot Area” in 2007,different levels of spatial planning are made according to different regional scopes of Changsha~Zhuzhou~Xiangtan city group.Against the background of the development of “new regionalism”,it is very necessary to improve the ability of comprehensive economic and social developme nt of city groups,build an authoritative comprehensive coordination mechanism and explore the functional mechanism of spatial planning in regional integration(city groups).Firstly,this paper sorts out the theories relevant to the regional integration and spatial planning of city groups,summarizes and outlines the connotation,development direction and basic measures of regional integration,illuminates the concept,system and detailed content of spatial planning,deeply parses the relationship between regional integration and spatial planning,refines the effect and influence factors of spatial planning on regional integration and analyzes its reasons.Secondly,guided by the theory of new regionalism,this paper conducts case analysis on the regional planning of Changsha~Zhuzhou~Xiangtan city group,the overall planning of the green core of Changsha~Zhuzhou~Xiangtan city group and the planning of the Changsha Pioneering District on the west of the Xiangjiang River,summarizes the functional mechanism of spatial planning from six aspects including the mechanism of strategic coordination,facility sharing,factor mobility,regional governance and policy guarantee and puts forward thoughts and ideas about the future development.Finally,this paper builds a tri~grade evaluation index system for the measurement of the effect level of spatial planning from five aspects including economy,society,population,space and ecology,comprehensively applies the method of hierarchy analysis and factor analysis,adopts the statistical data of three cities including Changsha,Zhuzhou and Xiangtan,conducts a quantitative evaluation and empirical analysis on the effect level of the spatial planning of Changsha~Zhuzhou~Xiangtan city group and raises the strategies of spatial planning for the future development of regional integration of city groups.This research opens up a new vision for the studies on the spatial planning involving the development of regional integration of city groups.