以长春市多年用地现状图和统计资料为数据源,以ArcGIS和SPSS软件为分析工具,引入静态耦合度和动态耦合度概念,从居住空间视角对长春市城市功能空间耦合的空间差异特征进行了动态研究,分析了城市功能空间耦合的动力机制。研究发现:①长春市城市空间扩展仍未摆脱圈层扩张的窠臼,居住空间表现出过高的扩张强度,是城市功能空间低耦合近域扩展的重要原因;②城市功能空间耦合的地域差异显著,核心区动、静态耦合度均高于外围,城市功能空间处于重构期,外围则处于低耦合的快速扩张状态;③选取耦合度指标通过聚类分析方法将中心城区划分为高耦合比较成熟、高耦合趋于成熟、高耦合新兴、低耦合比较稳定、低耦合新兴和低耦合特殊城市功能空间六类。
One of the important foundations for the study of urban spatial structuring is dissecting the interactive mechanisms among the different functional urban spaces. In this paper, we focus on the following four types of functional urban spaces: residential space,industrial space, service space and ecological space, and we take Changchun city as our primary example. The land status maps and other statistics covering the years 2002, 2005,2008, 2010 and 2012 provide the main data for this article. With the help of Arc GIS, SPSS and other analysis tools, the study examines the coupling relationship of functional urban spaces.We present two indexes: the Static Coupling Degree(expansion intensity index and coupling coefficient of land use conversion) and Dynamic Coupling Degree(Shannon-Weaver diversity index) — to study the coupling features and driving forces of interaction of functional urban spaces. In this dynamic research process, residential space is the focus of our study. Our research reveals the following: ① During the period from 2002 to 2012, urban spatial expansion in Changchun had still not escaped the ring pattern. Residential space shows excessive expansion, which is incompatible with other functional urban spaces. This gives the near field expansion of urban space a low coupling degree. ②Functional urban space coupling shows significant geographical differences. Both the dynamic and static coupling degrees of the core area are higher than those of the peripheral area, which indicates that the core area has entered a phase of reconstruction involving greater integration of the functional urban spaces.The peripheral area is still experiencing a rapid expansion, with relatively single function like residential districts or manufactory zones. ③ Implementing various coupling degree indexes and using a systematic clustering method and empirical discrimination method, we divide the central city of Changchun into six space types: completely mature functional urban space with a high coupling