摘要
荒漠化是当今人类社会共同面临的一个重大环境问题,荒漠化的动态变化分析是荒漠化防治的主要工作之一,而动态变化的前提和基础是荒漠化信息解译。可以在对荒漠地区资料收集、整理的基础上,选取满足研究的多个时相的TM影像数据,再借鉴前人有关的理论和方法后,确立研究区荒漠化解译标志,借助RS和GIS工具对研究区不同时期的荒漠化状况进行解译。据此,对库布奇地区的荒漠化进行了解译与动态变化研究,从面积变化、发展速率、等级的空间变化等方面分析了研究区荒漠化的动态变化,有关结论如下:①分析结果说明在生态脆弱、环境容量小的荒漠化地区,频繁的人类活动干扰,会加速沙漠生态系统的退化和恶化;②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根源,维持生态系统与人文环境的动态平衡。
Desertification is a common major environmental problem currently confronted by human society.Analysis of dynamic change of desertification is the foundation of prevention.Based on the analysis of the collected geology,geomorphology,soil,climate,hydrology,and vegetation data,desertification grade distribution maps in different periods can be obtained by selecting multi temporal TM image data of study areas in recent years,which can be interpreted by using RS GIS soft.In this paper,Kubuqi desert is selected as a sample and the dynamic process of desertification is discussed from the aspects of desertification area change,spatial changes of desertification levels.The main conclusion are as following： ①Frequent human activities will speed up the desert ecosystem degradation and deterioration of Kubuqi desert,where environmental capacity is small.②In addition to general engineering,biological measures,tourism development in desert area should be taken in order to eliminate the root causes of irrational human activities and maintain the dynamic balance of ecological systems and human environment.
出处
《节水灌溉》
北大核心
2010年第9期48-50,共3页
Water Saving Irrigation
基金
中国科学院知识创新工程重要方向项目"中国水土流失现状
趋势与对策研究"(KZCX-YW-401)
关键词
荒漠化
解译
发展速率
动态变化
desertification
translation
developing rate
dynamic change
