陇东地区城镇等级规模结构的分形研究  

A FRACTAL STUDY ON THE SCALE STRUCTURE OF THE URBAN SYSTEMS IN LONGDONG REGION

作　　者：李志刚[1] 唐相龙[2] 李斌[3] 

机构地区：[1]清华大学建筑与城市研究所,北京100084 [2]西北师范大学地理与环境科学学院,兰州730070 [3]2西北师范大学地理与环境科学学院,兰州730070

出　　处：《人文地理》2004年第2期22-24,34,共4页Human Geography

基　　金：国家社科基金资助项目 (99CJY0 0 6 )

摘　　要：城镇体系的分形研究是城市地理学研究的新方向。文章从分形理论在城镇体系研究中的应用入手 ,以豪斯道夫 (Hausdorff)维数为依据 ,借助Zipf公式 ,对甘肃省陇东地区的城镇等级规模结构进行了分维测算 ,结果表明该区域城镇体系具有分形特征 ,说明分形理论适合陇东地区城镇等级规模结构的测算分析。在分形的基础上分析了本区城镇规模结构的分布特点及其存在的问题 :①首位城市规模不突出 ,其经济带动和功能辐射力量薄弱 ;②中间位序的城镇分布过于集中 ,人口分布显得比较均衡 ;③陇东地区城镇体系建设缺乏区际空间规模结构的发展。最后基于分形理论的测算与分析结果 。The fractal study on the urban systems is a new way for the study of the city geography. This paper commences with the application of the fractal theory on study of urban system. Based on the fractal dimension of Hausdorff, the fractal dimension of the scale structure was calculated with Zipf rule in LongDong region of Gansu province. It was found this regions urban systems have the fractal properties. And it also showed that fractal theory fits the calculation and analysis on the scale structure of urban system in LongDong region. According to the fractal properties, the paper analyzing the distributional characteristic and existent problems of the scale structure of urban system: ①The scale of First Rank urban wasnt conspicuous in Longdong regions urban systems. It lacks the strength on economic promotion and functional effect. Therefore, it is important to take fractal theory into consideration when designing the scale structure of urban system in Longdong area; ②The distribution of Middle Rank urban was too densely to develop the Second Rank urban. The distribution of population appears balance developmental situation. So taking the relative advantages of location and economy, the government should put more emphasis on constructing central cities of the region, such as Pingliang city and Qingyang city. At the same time, some mineral cities as Qingcheng county and Huating county should also be paid more attention to; ③The construction of urban system lacked the development of spatial scale structure among correlative urban systems. The government should pay more attention to the mutual connection between the region and other neighborhood regions, enhance the development of spatial structure of township system in order to perfect the structural and economic function of township system in Longdong regions. On the basis of calculating and analyzing the scale structure of urban system with fractal theory, the paper puts forward some advices else for optimizing the structure and function of t

关 键 词：分形理论 分维 规模结构 陇东地区 

分 类 号：F292[经济管理—国民经济]