武汉城市圈城乡路网空间生长的分形研究

摘要/Abstract

摘要：

基于1989,1995,2000,2005和2010年武汉城市圈城乡路网空间数据库，运用GIS空间分析方法，引入关联维数和分枝维数两大分形测度维数，探讨武汉城市圈城乡道路网空间生长的时序演化规律.城乡路网节点关联维数较高，城乡节点体系发育较成熟呈网状；城乡路网节点近似呈直线式连接，路网通达性和经济性强；但城乡节点关联性空间差异较大，与区域范围（或路网规模）存在强依赖关系.1989-2010年间，武汉城市圈城乡路网分枝维数保持稳定增长势头，整体呈现进化态势，但受城乡节点体系和自然环境自组织作用显著，生长发育呈波动性.另外，整个路网分枝表现出以武汉市为中心的“放电”式伸展结构，空间分布较均衡.

关键词: 综合交通运输, 空间生长, 关联维数, 分枝维数, 城乡路网

Abstract:

Transportation network is the material conditions and prerequisites for forming the metropolitan area network system. It is also the main channel of material flow, energy flow and information flow which plays an important role in the socio-economic development of metropolitan area. Based on the urbanrural road network construction data of 1989, 1995, 2000, 2005 and 2010, this paper systematically reveals the spatial growth of urbanrural road network with the application of two major fractal dimensions using GIS spatial analysis methods. The node correlation dimension of urbanrural road network is high and the urbanrural node system growth is mature, which present a netted pattern. The urbanrural road network nodes approximately assume orthoscopic connection, thus the net accessibility is good. The spatial difference of urbanrural nodes correlation is obvious because there has positive correlation and space conjugate relation between the development level of space correlation of urbanrural nodes and area coverage or road network scale. From 1989 to 2010, the dendrite dimension of urbanrural road network of Wuhan metropolitan area maintained a stable growth tendency, showing a “discharge” stretch, significantly affected by urban and rural distribution and the natural environment, and the spatial distribution is relatively balanced.

Key words: integrated transportation, spatial growth, correlation dimension, dendrite dimension, urbanrural road network

中图分类号:

U113

刘承良，段德忠. 武汉城市圈城乡路网空间生长的分形研究[J]. 交通运输系统工程与信息, 2013, 13(5): 185-193.

LIU Cheng-liang, DUAN De-zhong. Spatial Growth of Urbanrural Road Network in Wuhan Metropolitan Area Based on Fractal Theory[J]. Journal of Transportation Systems Engineering and Information Technology, 2013, 13(5): 185-193.

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链接本文: http://www.tseit.org.cn/CN/abstract/abstract18667.shtml

http://www.tseit.org.cn/CN/Y2013/V13/I5/185

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