华东师范大学学报(自然科学版) ›› 2004, Vol. 2004 ›› Issue (4): 64-71.

• 地理学 河口海岸学 • 上一篇    下一篇

基于RS和GIS的我国干旱区土地利用格局研究—以甘肃省武威市为例

岳文泽,徐建华, 徐丽华   

  1. 华东师范大学 地理系 教育部地理信息开放实验室, 上海 200062
  • 收稿日期:2003-03-11 修回日期:2003-04-15 出版日期:2004-12-25 发布日期:2004-12-25
  • 通讯作者: 岳文泽

A Study on the Pattern of Land-use in Arid Area of Northwest China with RS and GIS------A Case of Wuwei City in Gansu Province

YUE Wen-ze, XU Jian-hua, XU Li-hua   

  1. Geography Information Open Laboratory, Ministry of Education; Department of Geography, East China Normal University, Shanghai, 200062, China
  • Received:2003-03-11 Revised:2003-04-15 Online:2004-12-25 Published:2004-12-25
  • Contact: YUE Wen-ze

摘要： 以我国西北内陆干旱区——甘肃省武威市为例,运用RS与GIS技术对研究区内土地利用的时空格局、演变趋势及其机制进行了评价与分析.结果表明：（1）该区土地利用类型比较单一,土地斑块密度非常稀疏.斑块面积变化差异最大的是农田和沙地两种类型.（2）2000年与1995年对比,该土地利用格局的多样性有所上升,优势度相对下降,但是土地利用斑块的破碎程度减小.不同土地利用类型的分离度差异及时间上的变化较大.（3）居民点与工矿等受人类活动影响较大的土地利用类型形态比较规则、简单,复杂性较低,但是稳定性较强.农田、草地等土地利用类型尽管复杂性较强,但是稳定性很差.在时间上,该土地利用格局的各种土地利用类型的复杂性基本上有所增强,但是稳定性基本上都是降低的.（4）该土地利用格局系统总体上趋于恶性发展.其时空演变具有复杂的原因,总体上包括三个方面：复杂的区域背景、恶劣的自然条件和不断增强的人类活动,应采取合理、有效的措施,促使其逐步向良性方向发展.

关键词: 干旱区, 土地利用, 分形, 干旱区, 土地利用, 分形

Abstract: Based on RS&GIS technique and quantitative analysis method and fractal model. We can reveal the main characters and dynamic process of the pattern of land-use in arid area. Our conclusions are as followings: (1) In Wuwei city the types of land-use were simplex, the density of land-use patches was small. (2) From 1995 to 2000 the diversity of the pattern of land-use had a little increase, while the dominance decreased comparatively. The fragmentation difference of all kinds of land-use was big. (3) In the terms of the simulative result with fractal model, the nature land-use influenced lower by humankind have more complexity than man-power land-use, the stability is reverse, The residential area and independent mine industry, water area were the most stable and simple land-use, while the farmland and grassland were the most complicated and unstable land-use. In the timescale the complexities of almost all land-uses in the pattern of land-use were increased while the stabilities were depressed. (4) The main factors that effect and control the pattern of land-use were complicated, there were three main factors region background, nature conditions and human activities. We should adopt reasonable measures to prevent the process.

Key words: land-use, fractal, arid area, land-use, fractal

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