地理科学进展

地理科学进展 ›› 2006, Vol. 25 ›› Issue (6): 138-147.doi: 10.11820/dlkxjz.2006.06.016

• 经济地理 • 上一篇    下一篇

天山北坡绿洲城市空间形态时空特征分析

张豫芳1,2, 杨德刚1, 张小雷1, 马文红1,2, 张宏远1,2   

  1. 1. 中国科学院新疆生态与地理研究所, 乌鲁木齐830011|
    2. 中国科学院研究生院, 北京100049
  • 收稿日期:2006-04-01 修回日期:2006-11-01 出版日期:2006-11-25 发布日期:2006-11-25
  • 作者简介:张豫芳( 1979- )| 女, 新疆阿勒泰人, 博士生, 主要从事城市发展与区域经济研究. E- mail: zhangyuf04@mails.gucas.ac.cn
  • 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)"

Spatial- tempor al Changes of Urban Spatial Morphology at the Nor thern Slope of the Tianshan Mountains

ZHANG Yufang1,2, YANG Degang1, ZHANG Xiaolei1, MA Wenhong1,2, ZHANG Hongyuan1,2   

  1. 1. Xinjiang Institute of Ecology and Geography, CAS, Urumqi, Xinjiang 830011, China|
    2. Graduate School, CAS, Beijing 100039, China
  • Received:2006-04-01 Revised:2006-11-01 Online:2006-11-25 Published:2006-11-25

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被引次数

26

摘要：

借助GIS 软件支持， 综合遥感影像、地形图和其它空间数据， 提取天山北坡8 个绿洲城市 1990 年和2000 年建设用地图形信息， 计算1990 年和2000 年天山北坡8 个绿洲城市的平面轮 廓形状的分维数、紧凑度以及城市用地扩展类型， 讨论紧凑度与分维数的关系。研究结果表明， 天 山北坡绿洲城市形态总体特征表现为形状规则， 结构紧凑。1990~2000 年， 城市扩展类型主要为 外延型， 城市形态分维数增加， 紧凑度降低， 城市外部形态趋于复杂化和不规则化， 而内部结构趋 于松散化， 与同时期我国大部分城市的用地扩展方式有所不同。同时， 天山北坡绿洲城市形态特 征描述参数间存在着明显的幂函数关系， 并且是一种线性负相关关系， 即随着分维数的增加， 紧 凑度呈递减的趋势。

关键词: 城市空间形态, 城市用地扩展类型, 分维数, 紧凑度, 天山北坡经济带

Abstract:

Urban spatial morphology is an important aspect in the huge and complex urban system. The essential rule of urban development and change cannot be understood via qualitative description, so quantitatively researching urban spatial characteristic has significant practice meaning for urban management and planning. Based on remote sensing, GIS and Landsat TM/ ETM digital images, this paper analyzes the spatial- temporal changes of urban spatial morphology at the northern slope of the Tianshan Mountains in Xinjiang during the period from the late 1980s to the late 1990s by computing compact rations and fractal dimensions of the urban form as well as the types of urban land expansion. The results are as follows: (1) The spatial- temporal changes of urban spatial morphology at the northern slope of the Tianshan Mountains belong mostly to compact and regular ones. (2) The average compact rations are 0.541 and 0.525, and the mean fractal dimensions are 1.2399 and 1.25 respectively for 1990 and 2000. The type of urban land expansion of 7 cities out of the 8 in the study area is 'extension'from 1990 to 2000. It was found that the shapes of cities in the study area tended to be less compact and more fragmentized. Generally, a more compact city has more advantages than a less one; so changes in the forms of the study area are considered being in a bad way. Shapes of several cities have been drastically changed during the period from 1990 to 2000. Fukang, Miquan and Shihezi are cities with high increment in fractal dimensions and high decrease in compact rations. Urban spatial morphology of them is more compact and regular. However, it is another case in Kelamayi, Kuytun and Urumqi. And (3) Another important finding is that there is a power function relationship between the compact and the fractal dimension of urban spatial morphology, which is only a qualitative deduction before.

Key words: compact ratio, fractal dimension, the northern slope of the Tianshan ountains, type of urban land expansion, urban spatial morphology

中图分类号: 

  • P283