摘要
城镇是人口和经济的聚集地,区域城镇体系在一定时空条件下呈现分形特征;利用豪斯道夫维(Hausdorff)和聚集维数(Aggregation dimension)对定西地区城镇体系进行了空间分形研究,并测算了相应的分维数,证明该区域城镇体系也具有空间分形特征,存在城镇体系等级规模结构松散,城镇首位度高,各城镇间联系不紧密等问题。
Urban is the congeries of population and economy, the urban system of an area has the trait of fractal at different time-space preconditions.Based on fractal theory, this paper uses Hansdorff dimension and Aggregation dimension to analyse the spatial structure of urban system in Dingxi district, and also calculate the fractal dimension.The result shows the urban system take on fractal structure, at the same time have some problems such as the size-scale structure is loose, the law of primate city is big and the capacity of spatial interaction is weak.
出处
《国土与自然资源研究》
2005年第4期3-5,共3页
Territory & Natural Resources Study
基金
教育部博士点基金项目(20030730017)
关键词
城镇体系
分形理论
空间结构
定西地区
urban system
fractal theory
spatial structure
Dingxi district
