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| 区域城镇点-轴系统空间结构的分形模型 | |
| 引用本文： | 蒙莉娜,郑新奇,赵璐,李志建,杨鑫.区域城镇点-轴系统空间结构的分形模型[J].地理科学进展,2009,28(6):944-951. |
| 作者姓名： | 蒙莉娜 郑新奇 赵璐 李志建 杨鑫 |
| 作者单位： | 1. 中国地质大学(北京)土地科学技术学院,北京,100083 2. 中国地质大学(北京)土地科学技术学院,北京,100083;北京市国土资源信息开发研究重点实验室,北京,100083 |
| 基金项目： | 国家自然科学基金，国家社会科学基金，国家科技支撑项目，中国地质大学(北京)人才基金 |
| 摘 要： | 点—轴系统是我国区域城镇空间结构的主要模式之一。探索城镇点—轴系统空间结构，进而揭示其数理本质，是进行地理空间优化的理论基础。文章从分形理论出发，构建点—轴系统分形模型，明确该模型的地理意义，以此刻画点—轴系统的空间结构。利用GIS软件开发了点—轴系统分形模型计算工具。以济南市城镇—交通系统为例，在GIS数据环境下计算其分形模型参数，研究结果发现：{1}区域点—轴系统发育到一定阶段的确呈现分形性质，点—轴系统分形模型可以有效地反映点—轴系统空间结构形态；{2}无标度性、分形、有序性是地理空间的不同状态，推论得出随着点—轴系统的发展，其空间结构也经历着无序→无标度网络→分形结构→有序→更为复杂的无序的演进过程；{3}济南市城镇—交通系统已经形成点—轴系统的雏形，城镇点—轴系统处于发展阶段。 |
| 关 键 词： | 区域城镇体系 点—轴系统理论 点—轴系统分形模型 空间结构 分维 济南市 |
Study on Fractal Model of Regional Urban Pole-Axis System Spatial Structure |
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| MENG Lina,ZHENG Xinqi,ZHAO Lu,LI Zhijian,YANG Xin.Study on Fractal Model of Regional Urban Pole-Axis System Spatial Structure[J].Progress in Geography,2009,28(6):944-951. | |
| Authors: | MENG Lina ZHENG Xinqi ZHAO Lu LI Zhijian YANG Xin |
| Institution: | 1. School of Land Science and Technology, China University of Geosciences, Beijing 100083, China; | 2. Beijing Key Laboratory of Land Resources Information Development Research, Beijing 100083, China |
| Abstract: | Pole-axis system is one of the main modes of Chinese regional spatial structure. It is an academic element for geographical space optimization to research urban pole-axis system spatial structure and reveal its mathematics nature. Based on pole-axis system theory, a fractal model of pole-axis system was built, and then its geographical meaning was illuminated. According to the mathematic elements of pole-axis system fractal model, this paper developed counting program of fractal model by GIS software. Taking urban-traffic system in Jinan City, Shandong Province as an example, this paper counted the parameter of its fractal model by using GIS data format. The results showed that: (1) The pole-axis system presented a fractal nature indeed when developing to a certain stage, and the fractal model of pole-axis system can effectively reflect the spatial structure of pole-axis system. (2) Fractal, scale-free and order is the different states of geo-spatial. We deduced that its spatial structure has experienced an iterative process of disorder → scale-free → fractal→ order→ a more complex disorder with the development of pole-axis system. (3) The urban-traffic system in Jinan City, Shandong Province had shaped the rudimental structure of pole-axis system, which was in the developing stage. |
| Keywords: | regional urban system pole-axis system theory a fractal model of pole-axis system spatial structure dimension Jinan City |
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