地理科学进展 ›› 2007, Vol. 26 ›› Issue (6): 95-105.doi: 10.11820/dlkxjz.2007.06.010

• 城市与人口地理 • 上一篇    下一篇

基于经济联系强度的乌鲁木齐都市圈 空间结构研究

乔旭宁1,3, 杨德刚1, 毛汉英2, 张小雷1, 吴得文1,3, 张豫芳1,3   

  1. 1. 中国科学院新疆生态与地理研究所, 乌鲁木齐830011|
    2. 中国科学院地理科学与资源研究所, 北京100101|
    3. 中国科学院研究生院, 北京100049
  • 收稿日期:2007-06-01 修回日期:2007-09-01 出版日期:2007-11-25 发布日期:2007-11-25
  • 作者简介:乔旭宁(1977-), 河南偃师市人, 博士研究生, 主要从事区域经济与区域规划研究. E-mail:qiaoxuning@126.com
  • 基金资助:

    中国科学院知识创新项目“新疆近50 年LUCC 与绿洲和城镇化研究(KZCX3- SW- 327- 04).

Study on Spatial Structur e of Urumqi Metropolitan Area Based on Economic Relation Intensity

QIAO Xuning1,3, YANG Degang1, MAO Hanying2, ZHANG Xiaolei1, WU Dewen1,3, ZHANG Yufang1,3   

  1. 1. Xinjiang Institute of Ecology and Geography, CAS Urumqi, Xinjiang 830011, China|
    2. Institute of Geography and Natural Resource Research, Beijing 100101, China|
    3. Graduate School, CAS, Beijing 100049, China
  • Received:2007-06-01 Revised:2007-09-01 Online:2007-11-25 Published:2007-11-25

摘要:

从经济联系强度的角度出发, 运用分形理论对乌鲁木齐都市圈的空间结构进行研究, 计算 了都市圈内城市间经济联系强度。对比分形的自相似特征, 分析了都市圈经济联系强度的空间分 布情况, 指出都市圈存在中心城市辐射力不足、对其他城市发展带动力弱等问题。结合产业的相 似度, 探讨了提高中心城市经济辐射力的优化方案, 结果表明乌鲁木齐、米泉市、昌吉市作为一个 经济区统一规划, 经济联系强度分维值是以乌鲁木齐市为中心的近2 倍, 都市圈空间结构明显优 化。在对优化方案进行深入分析的基础上, 发现乌鲁木齐都市圈经济联系强度扩散的空间特征: ( 1) 中心城市的经济辐射能力以及周边地区对中心城市经济辐射力的接受能力, 随距离增加呈现 出按指数函数衰减; ( 2) 梯度扩散与城市的等级规模有关, 城市等级规模小, 对经济辐射的接受能 力弱, 可能出现跃迁现象。在经济扩散过程中, 两种特征同时并存, 前者占主导地位。

关键词: 都市圈, 分维值, 经济联系强度, 空间结构, 乌鲁木齐

Abstract:

Based on fractal theory, spatial structure of Urumqi Metropolitan Area is studied; and the economic relation intensities amongst different cities and counties are calculated. In comparison with self- affine fractal characteristics, the spatial distributions of economic relation intensity are analyzed. It is pointed out that the radiation of central city is weak. Combined with degree of industries’similarity, measures of optimization are discussed. It shows that Urumqi, Miquan and Changji are melt into one economic region, and fractal dimension of economic relation intensity is nearly as twice as that of centre in Urumqi. The spatial structure of Metropolitan Area can be further optimized. Based on analysis of optimized plan, two characteristics are found: first of all, economic radiating power and the acceptability of cities around the core region present the law of decaying according to the exponential function with increase of distance. Secondly, gradient diffusion depends on city’s rank and scale. Economic diffusion may bypass the cities whose ranks are low and reach the cities that from the core region but with higher ranks are farther. During the course of economic diffusion, two characteristics co- exist, and the former law is more manifest.

Key words: economic relation intensity, fractal dimension, metropolitan area, spatial structure, Urumqi