PROGRESS IN GEOGRAPHY ›› 2009, Vol. 28 ›› Issue (6): 944-951.doi: 10.11820/dlkxjz.2009.06.016

• Original Articles • Previous Articles     Next Articles

Study on Fractal Model of Regional Urban Pole-Axis System Spatial Structure

MENG Lina1, ZHENG Xinqi1,2, ZHAO Lu1, LI Zhijian1, YANG Xin1   

  1. 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
  • Online:2009-11-25 Published:2009-11-25

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.

Key words: a fractal model of pole-axis system, dimension, Jinan City, pole-axis system theory, regional urban system, spatial structure