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林业资源管理 ›› 2009›› Issue (1): 89-94.doi: 10.13466/j.cnki.lyzygl.2009.01.002

• 科学技术 • 上一篇    下一篇

基于RS和GIS的托克逊县沙化土地时空动态分析与评价

郭靖1, 刘萍2, 高亚琪3, 王丙超4, 刘璐1   

  1. 1.新疆农业大学林学院, 乌鲁木齐 830052;
    2.华南农业大学林学院, 广州 510542;
    3.新疆林业科学研究院, 乌鲁木齐 830000;
    4.新疆维吾尔自治区林业厅, 乌鲁木齐 830000
  • 收稿日期:2008-11-25 修回日期:2008-12-18 出版日期:2009-02-28 发布日期:2021-01-27
  • 通讯作者: 刘萍, 教授, 博士, 从事森林经理和林业系统工程教学科研工作。Email:bengtiaoliu@126.com
  • 作者简介:郭靖(1982-), 硕士研究生, 研究方向:林业系统工程。Email:guojing7227279@163.com
  • 基金资助:
    新疆托克逊区域沙漠近10年变化分析

RS and GIS-based Analysis on Dynamic Changes of Desertified Land in Toksun County

GUO Jing1, LIU Ping2, GAO Yaqi3, WANG Bingchao4, LIU Lu1   

  1. 1. College of Forestry, Xinjiang Agricultural University, Urumqi, 830052;
    2. South China Agricultural University, Guangzhou 510542, Guangdong, China;
    3. Xinjiang Academy of Forestry Sciennce, Urumqi, 830000;
    4. Xinjiang Forestry Department, Urum qi, 830000, Xinjiang, China
  • Received:2008-11-25 Revised:2008-12-18 Online:2009-02-28 Published:2021-01-27

摘要: 利用托克逊县1990年、1999年、2005年三期TM 卫星影像数据及2007年实地调查数据, 分析了托克逊县沙化土地状况、动态变化及演变机理。结果表明:2005年托克逊县沙化土地面积为804 751hm2, 占全县面积的51.54%;1990-1999年, 南部区和农田区的沙质土地面积都处于扩展过程, 东部封育区风蚀劣地面积处于严重扩展时期;1999-2005年南部区和农田区仍处于扩展时期, 东部封育区由于采取一系列治理措施, 沙质土地和风蚀劣地面积明显减少, 沙化状况总体上有了明显改善。南部区气候变化是土地沙漠化形成和发展的主要驱动力, 东部封育区主要受自然和人为过程的共同作用, 其中气候变化是其主要驱动力;农田区的人为因素是其主要的驱动力。针对3个研究区的综合生态环境特点, 分别提出了各区相应的沙化土地治理对策。

关键词: 沙化土地, 动态变化, 时空分析, 评价, RS, GIS

Abstract: In this paper, TM satellite image data acqui red in 1990, 1999 and 2005 and field survey data acquired in 2007 were used for the analysis on the state and dynamic changes of desertified land and its eveolution process in Toksun County, Xinjiang.The results showed that desertified land area was 804 751hm2,w hich accounted for 51.54% of w hole Toksun County area in 2005.The sandy land area in the southern part and farmland area was in ex tension process and the sandification land area cansed by w ind erosion in the eastern part was expanding seriously in the years from 1990 to 1999.And the southern area and farmland area of Toksun still was in extension period from 1999 to 2005.Since a series of control measures were adopted in the eastern enclosed area of Toksun, the sandy land area was reduced and began to become better gradually.Climate change was the main driving fo rce of the desertification in the southern part.In the eastern area climate change and human factors were the driving force.Based on comprehensive eco-enviro nment characteristics in study area, the paper put forw ard the corresponding desertification land control measures for each area.

Key words: decertified land, dynamic changes, spatial-temporal analysis, evaluation, RS, GIS

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