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基于分形理论的和田地区城镇体系空间结构特征分析

2016-10-19阿不都克依木·阿布力孜杨永国周玄德陈溯王涛

湖北农业科学 2016年5期

阿不都克依木·阿布力孜 杨永国 周玄德 陈溯 王涛

摘要:城镇体系结构是城市化格局及演化的基本框架。以新疆維吾尔自治区和田地区7县1市为例,运用分形理论和引力模型分析和田地区城镇体系空间结构的时空变化特征,得出和田地区城镇空间结构由于受到地形的影响,城镇沿国道呈条状分布,城镇之间联系较紧密的结论;和田地区城镇体系空间结构以和田市为中心,城镇间的经济联系强度也以和田市最强,其周围城镇的经济联系强度随着与和田市距离的增加逐渐减弱,但随着社会、经济的发展,和田地区城镇间的联系强度在逐年增加,其中2012年1级、2级城镇的数量已达到4个,分别是和田市、和田县、墨玉县、洛浦县。

关键词:城镇体系;空间结构;分形理论;和田地区

中图分类号:F291.3 文献标识码:A 文章编号:0439-8114(2016)05-1134-05

DOI:10.14088/j.cnki.issn0439-8114.2016.05.012

Study on Spatial Structure of Town System in Hotan Prefecture Based on Fractal Theory

ABUDUKEYIMU Abulizi1,2,YANG Yong-guo1,ZHOU Xuan-de2,CHEN Su2,WANG Tao2

(1.School of Resources and Earth Sciences,China University of Mining & Technology,Xuzhou 221116,Jiangsu,China;2.College of Resources and Environmental Science,Xinjiang University/Key Laboratory of Oasis Ecology of the Ministry of Education,Urumqi/Key Laboratory of City Intellectualizing and Environment Modelling, Urumqi 830046,China)

Abstract: Urban architecture is the basic framework of the pattern of urbanization and evolution. Taking 7 countries and 1 city in Hotan prefecture of Xinjaing Uigur Autonomous Region as example,the temporal variation characteristics of urban spatial structure were analyzed using fractal theory and gravity model. The results showed that the urban presented zonal distribution along the national highway,and connection among the towns was close due to topography influence. Hotan city was the center of the spatial structure in Hotan urban system,and had the strongest economical relation intensity among the towns, which weakened with the distance from Hotan city increasing. But with the development of social and economic,the economical relation intensity between towns gradually increasd year by year,and the number of urban in grade 1 and 2 reached 4,including Hotan city,Hotan country,Moyu country and Luopu country.

Key words: urban system; spatial structure; fractal theory; Hotan prefecture

城镇体系和城市化是城市地理研究的两个重要领域。在城市化进程中,人口和经济活动以较大的规模和较快的速度向城市集聚,城市的空间形态开始由单体型城市向组合型城市形态转换[1]。城市空间布局结构是城市在区域空间上的投影,也是区域自然、经济社会条件空间分异的表现形式[2]。多个城市在一定的区域空间集聚,达到一定的密度,从而使得各城市相互作用、相互组合,取得单个城市无法取得的经济社会效益[3]。国内外对城镇空间联系的研究从联系现状的静态描述转向联系过程的动态解析,从空间联系理论的定性分析转向定量模型的应用[4,5]。……

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