RS技术支持下的城镇体系空间结构分形探析  

THE STUDY ON THE FRACTAL DIMENSION OF THE SPATIAL STRUCTURE OF THE CITY-TOWN SYSTEM BY RS TECHNOLOGY

作　　者：胡小猛[1] 陈敏[1] 王杜涛[1] 

机构地区：[1]上海师范大学旅游学院,中国上海200234

出　　处：《经济地理》2009年第4期556-559,共4页Economic Geography

基　　金：国家自然科学基金项目(编号:40671018);上海市教委"地理学与城市环境"重点学科建设基金项目(编号:J50402)联合资助

摘　　要：受着"市场经济原则"的强烈支配,通过自组织演化所形成的城镇体系,在空间特征上具有无标度性(non-scaling)和自相似性(self-similarity)特点,也即是具有分形(fractal)优化趋向。以鲁豫皖相邻地区为研究对象,利用RS技术和图像处理手段分别提取不同视点高度上的区域栅格图像,并对其进行监督分类解译。根据对不同的视点高度和对应图像中城镇及乡村聚落要素像元点数的回归关系统计分析,研究得出区域城镇体系空间结构分形维数为2.284。该研究结论对揭示城镇体系的分形几何特征具有一定的理论意义,对判定区域城镇系统地理优化程度及分析其影响因素均具有一定的价值。Under the control of market-economy force, the spatial structure of the developed city-town system genrallly express such characteristics as non-scaling and self-similarity. This means the spatial structure of the developed city-town system is a fractal system. Taking the neighoring area of Henan, Shandong and Anhui provinces as a case study, the paper first gets raster images of the area from different heights （h）, and then surprised-classifies these images and calculates the number of the pixels representing city-town type. Based on the recursive relation of the heights and the pixel numbers, the paper finds that the fractal dimension of the spatial structure of the developed city-town system is 2.284. The fractal dimension of the spatial structure of the city-town system is a valuable indicator showing the degree of the disorder of the distribution of the city and town.

关 键 词：RS技术 城镇体系 自相似性 分形特征 

分 类 号：K901.8[历史地理—人文地理学]