摘要
荒漠化的动态变化分析是荒漠化防治工作的前提和基础,在对选取的库布齐沙漠多个时相的遥感影像数据处理后,根据确立的研究区荒漠化解译标志,借助RS和GIS工具得到研究区不同时间的荒漠化状况,从荒漠化面积变化、等级的空间变化等方面分析了研究区荒漠化的动态变化。分析结果表明,从1989年以来荒漠化总面积减少的趋势明显,尤其在黄河沿岸荒漠化得到有效治理;但在东南部、沙漠腹地和海子周边荒漠化出现了增长。为了从根本上治理库布奇沙漠地区的荒漠化,除了一般的工程、生物措施外,可以借助旅游产业开发,消除不合理人类活动产生的影响,维持生态系统与人文环境的动态平衡。
Analysis of dynamic change in desertification is the foundation of desertification prevention.Multi-temporal TM image data of Kubuqi Desert in recent years were analyzed and different periods of desertification grade distribution maps were obtained by image interpretation using RS GIS software.Dynamic desertification process was discussed in terms of desertification area change and spatial changes of desertification levels.Results show an obvious downward trend of total desertification area after 1989.In view of the spatial variations of desertification levels,desertification is reversed in most areas along the main course of Yellow River,but increased in southeastern part,southern desert hinterland,and the surrounding of lakes.In addition to general engineering and biological measures,irrational human activities should be eliminated in order to maintain the dynamic balance of ecological systems and human environment.
出处
《水土保持通报》
CSCD
北大核心
2010年第6期100-102,共3页
Bulletin of Soil and Water Conservation
基金
国家重点基础研究发展(973)计划项目"中国主要水蚀区土壤侵蚀过程与调控研究"(2007CB407203)
关键词
库布齐沙漠
荒漠化
动态变化
Kubuqi Desert
desertification
dynamic change
