地理研究

地理研究 ›› 2011, Vol. 30 ›› Issue (9): 1669-1682.doi: 10.11821/yj2011090011

• 地表过程研究 • 上一篇    下一篇

锡林郭勒盟草原沙化动态变化及驱动力分析——以正蓝旗为例

李金亚1, 徐斌1, 杨秀春1, 金云翔1, 李亚云2, 张济2, 赵莉娜3, 李润林1   

  1. 1. 中国农业科学院农业资源与农业区划研究所,北京 100081;
    2. 中国科学院地理科学与资源研究所,北京 100101;
    3. 中国科学院植物研究所,北京 100093
  • 收稿日期:2010-08-19 修回日期:2010-11-29 出版日期:2011-09-20 发布日期:2011-09-20
  • 通讯作者: 徐斌(1957-),男,陕西三原人,研究员,博士生导师,主要从事资源、生态及灾害遥感研究。 E-mail: xubin@mail.caas.net.cn
  • 作者简介:李金亚(1985-),男,江苏宿迁人,博士生,主要从事草原遥感和土地荒漠化研究。 E-mail:lijinya_caas@hotmail.com
  • 基金资助:

    国家(863)高技术研究发展专项资助项目(2006AA10Z242);"十一五"国家科技支撑计划(2006BAD16B05-2);国家自然科学基金(40701055);农业部2009草原资源与生态监测项目

Dynamic changes and driving force of grassland sandy desertification in Xilin Gol: A case study of Zhenglan Banner

LI Jin-ya1, XU Bin1, YANG Xiu-chun1, JIN Yun-xiang1, LI Ya-yun2, ZHANG Ji2, ZHAO Li-na3, LI Run-lin1   

  1. 1. Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081, China;
    2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    3. Institute of Botany, CAS, Beijing 100093, China
  • Received:2010-08-19 Revised:2010-11-29 Online:2011-09-20 Published:2011-09-20

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摘要： 以地处浑善达克沙地腹地的正蓝旗为研究区,以TM/ETM+影像数据为基础,利用动态度、栅格运算等方法,对该区1980年代以来四个时期的草原沙化状况及其空间动态变化进行了监测分析,并探讨了正蓝旗草原沙化变化与降雨、温度、人口和牲畜等数据的关系。结果表明: (1) 三级沙化草地及未沙化草地间的相互转换主导着草原沙化发展或是逆转的方向; (2)中度沙化草地的变化方向对草原沙化发展的方向及沙化结构影响作用突出; (3)沙化发展区主要分布在赛音呼都嘎苏木东南部以及桑根达来镇东部;(4)自然因素作为草原沙化的环境背景并无明显变化,畜牧、沙化治理政策等人为因素是草原沙化逆转或发展的主导因子。

关键词: 草原沙化, 时空动态变化, 遥感, 驱动力分析, 正蓝旗

Abstract: Based on the dynamic degree analysis and grid calculation analysis of the TM/ETM data in four periods, the status and spatial dynamic variation of grassland sandy desertification in Zhenglan Banner were monitored and studied. The relationships between grassland sandy desertification and relevant factors, i.e. climate, population, and livestock, were discussed. The results show that: 1) The change direction of grassland desertification was due to the interconversion of non-sandy and three-level desertification grassland. 2) The change of medium grassland desertification affects the structure and change direction of the grassland desertification prominently. 3) The developing-sandy grassland area is mainly distributed in the southeast of Sain Hudag and the eastern part of Sanggin Dalai. 4) Human factors, such as animal husbandry and desertification control policies were the dominant factors during the reversion and deterioration process of grassland desertification, while natural factors had no significant change as the environmental background.

Key words: grassland sandy desertification, space-time dynamic change, remote sensing, driving force analysis