环长株潭城市群空间联系演变特征与对策研究

科学揭示城市群内在空间联系特征是诊断问题与优化对策，以实现可持续发展的关键所在。在城市综合质量指标评价体系和可达性分析基础上，基于空间相互联系、对外服务扩散能力、对内集聚影响力等层面方法集成对2006年以来环长株潭城市群的空间联系展开了实证分析。结果表明：城市群空间相互作用呈现出以长沙-株洲-湘潭为核心的内心圈层结构，交通科技对城市空间联系产生的时间压缩效应明显，空间联系网络格局出现进一步扩大的趋势；对外服务扩散能力北高南低、东北高西北低，但区域差异程度得到较大幅度的改善，呈现出以长沙为主核心的圈层模式与常德市为副中心的极核模式并存的局面；长沙是城市群集聚的核心，益阳、娄底、常德处于城市对内集聚影响的低位区，城市群对内集聚影响能力沿高铁线路分布和拓展，长昆客运专线开通后核心地带开始呈现出向西偏移的态势；针对城市群存在极核结构依然明显、内核圈层尚处雏形、区域网络联动效应较差、基础配套有待加强的问题，提出了加强区域产业协作、优化战略政策和完善一体化交通体系的建议。

Study on the Evolution Characteristics and Countermeasures of Spatial Evolvement Relation in Urbanagglomeration around Changsha-Zhuzhou-Xiangtan

Revealing the relations of intrinsic spatial link characters of urban agglomeration by scientific method is the key to analyze the problems and optimize the strategies for the achievement of sustainable development. Based on the evaluation system of urban comprehensive quality index and accessibility analysis, this paper explored an empirical analysis on the spatial linkages of the urban agglomeration around Changsha-Zhuzhou-Xiangtan city group from three aspects of spatial interrelation, external service ability and internal agglomeration ability since 2006. The results showed that the spatial interaction of Changsha-Zhuzhou-Xiangtan urban agglomeration presents inner structure; it is obvious that the effect of traffic science and technology on urban spatial relation and the pattern of spatial connection network appear to be further expanded. External service ability is high in the north; low in the south, but the degree of regional disparities has been greatly improved, which is showing the coexistence of Changsha as the core and Changde as the secondary center, also Yiyang and Loudi under the low concentration of urban internal agglomeration. The ability of urban agglomeration on inner agglomeration is distributed and expanded along high-speed railway lines. After the opening of the Chang-Kun passenger dedicated Line, the core area began to show the trend of westward shift. At last, it is suggest that strengthen regional industrial collaboration, optimize the strategic policy and improve the integrated transportation system.