长沙市小城镇撤并的时空演进及其特征识别

Research on the Spatial-temporal Pattern Evolution Characteristic Identification of Township Merging in Changsha

以中部典型城市长沙市域为研究范围,利用多源数据和空间分析方法,着重阐释1995年后长沙市小城镇撤并的历程以及小城镇空间分布、结构、形态等时空格局特征。从时空格局分析的结果上看,长沙市小城镇的撤并显著拓展了单个小城镇的规模和发展空间,强化了中心镇的调控能力,优化了以中心镇为小区域核心的空间发展体系结构,并高度匹配了中心城市大都市化的进程与诉求。但同时小城镇撤并与全域生态环境空间演变的互动关联分析结果也显示,以发展为导向的撤并过多强调小城镇发展而忽视其应承担的生态安全等基础保障性问题。

This paper takes small towns in Changsha City as an example,Identify and summarize the spatial-temporal pattern evolution characteristics and manifestations of"withdrawal and merger"of small towns.The spatial-temporal pattern characteristics in spatial distribution,structure,morphology and other aspects presented in the multiple rounds of withdrawal and merger of small towns in Changsha since 1995 are particularly explained.Seen from the results of spatial-temporal pattern analysis,the withdrawal and merger of small towns in Changsha has significantly expanded the scale and development space of individual small towns,strengthened the control ability of central towns,optimized the spatial development system with a central town as the core of a small region,and highly matched with the process and appeal of urbanization of central cities.However,the interactive correlation analysis results of the withdrawal and merger of small towns and the spatial evolution of the regional ecological environment also show that the development-oriented withdrawal and merger emphasized too much the development of small towns and ignored basic security issues such as due ecological security responsibility.