基于GIS的徐州地区乡村性及其空间分异特征

以乡镇为研究单元，构建乡村性指数，对徐州地区的乡村性进行定量评价．借助ArcGIS软件为支撑平台，采用全局空间自相关、“热点”分析等空间分析方法，对研究区乡村性的空间分异进行分析．结果表明：徐州地区的乡村性指数普遍较高，乡村性比较高的区域所占比重较大；乡村性在空间分布上有显著差异，乡村性较低的地区集中分布于徐州市区周边及县级行政所驻地附近，其它地区乡村性较高．研究区的乡村性空间分布呈现集聚分布态势，局部表现出“冷点区”和“热点区”的空间结构；“冷点区”位于研究区的中部、徐州市区附近及邳州市和新沂市县城附近；“热点区”主要位于沛县的西部及睢宁县和邳州市北部．

Research on rurality evaluation and spatial differentiation in Xuzhou

Towns were taken as empirical study units to set up rurality indexes, through which the rurality of Xuzhou district was evaluated quantitatively. ArcGIS software was used as the technical supporting platform. Anal- ysis approaches constituted global spatial autocorrelation analysis and hot spot analysis. The spatial differentiation of rurality in Xuzhou was studied. The research found that the rurality indexes of Xuzhou were generally relatively higher, the areas with a relatively higher percentage of rurality accounted for a large proportion of the total areas. Ru- rality exhibited significant disparity in spatial distribution. Areas with a relatively lower percentage of rurality con- centrated on peripheral places of Xuzhou urban city and its county-level administrative residences, while other areas exhibited relatively higher rurality. The spatial distribution of rurality in the investigated district tended to cluster. Some portions of the investigated district displayed a spatial structure featuring cold areas and hot areas. Cold areas were located in the middle of the investigated area, namely, areas near downtown Xuzhou, and in the east, namely, areas near the county seat both Pizhou City and Xinyi City. Hot areas were mainly located in the western part of Peixian county, and northern part of both Suining county and Pizhou City.