基于集聚与扩散视角的长春市服务设施空间格局特征

Distribution characteristics of service facilities in Changchun from the perspective of agglomeration and diffusion

以长春市中心城区的5类共1658个服务设施网点为基础数据,基于ArcGIS软件平台,通过构建优势度、集中度、中心度等空间模型,基于集聚与扩散双重视角探讨了服务设施网点的空间区位特征。研究发现:首先,长春市中心城区的服务设施网点呈现出显著的核心区集聚特征,空间分布的紧凑性整体较高,"单一中心"分布模式明显;其次,各类服务设施网点均为显著的空间集聚分布特征,但不同类型服务设施空间集聚与扩散的水平存在显著差异,其中盈利型、综合型设施的集聚度高于福利型、生活型设施,中心性低于福利型、生活型设施;最后,指出了各类服务设施空间布局存在的主要问题,并相应地提出了其调控的路径。

From the perspective of agglomeration and diffusion, the characteristics of spatial location of service facilities networks in Changchun city center were explored by using AreGIS software platform to build concentra- tion degree and centrality space model based on the data of 5 classes a total of 1658 service facilities networks in Changchun. The study found that there is a significant concentration trend in service facilities network in the core city. On the whole, the degree of spatial compactness is high. It＇ s spatial distribution seems to be a kind of mono - centric pattern obviously. From the point of space compactness, nearest neighbor indicator of service fa- cilities distribution network is between 0.37 -O. 88. All kinds of service facilities networks are significant spatial agglomeration distribution, but the agglomeration degrees of profits and comprehensive facilities are higher than that of welfare and life facilities. From the point of space centrality, the differences between services center facil- ities is significantly, among them, the diffusion degrees of welfare and life facilities are higher than that of profits and comprehensive facilities.