黄河源区生态环境退化研究  

A Case Study on the Eco-environmental degradation in the Source Region of the Yellow River,Northeast Qinghai-Xizang Plateau

作　　者：封建民[1] 王涛[1] 谢昌卫[1] 齐善忠[1] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所沙漠与沙漠化重点实验室,甘肃兰州730000

出　　处：《地理科学进展》2004年第6期56-62,共7页Progress in Geography

基　　金：国家重点基础研究发展规划973项目"中国北方沙漠化过程及其防治研究"(G2000048705)资助.

摘　　要：生态环境退化是黄河源区所面临的重要的生态问题和社会经济问题。源区生态环境退化不但影响本区经济的可持续发展,而且对中下游地区的生态环境和水文条件构成很大威胁。在收集区内现有研究成果的基础上,通过对2000年TM影像的解译,对黄河源区生态环境退化现状和特征作了全面系统的研究。源区生态环境退化主要表现在冰川退缩、冻土面积的减小和冻融侵蚀面积的扩大,植被退化和土地退化的加剧等过程。最后,在分析未来气候变化和人类活动的基础上,对生态环境变化趋势作了预测。Eco-environmental degradation in the source region of the Yellow River is a very serious ecological and socially economic problem. During the last half century, especially the last 30 years, the Eco-environment degraded very quickly influenced by natural factor together with human activities, in which water environmental changes, deglaciation, permafrost reduction, vegetation degeneracy and land degradation area the main aspects. The eco-environmental information system in the source region of the yellow river grassland is worked out supported by GIS and RS, as well as field investigation and indoor analysis, based on knowledge the classification is worked out and multi-source data is gathered. The result indicated that the total degraded land area has reached to 31646.8km2 in2000, occupied 34.4% of the whole region. Based on the analysis of the regional climate changes and human activities tendency in the future, the authors consider the eco-environment in the source region of the Yellow River will deteriorate continuously in the next 20~30 years. So, for environmentally and socially sustainable development in the study area and the middle and Lower River reaches, there is an urgent need to protect eco-environment of the source region of the Yellow River.

关 键 词：黄河源区 生态环境退化 现状 趋势预测 

分 类 号：X171[环境科学与工程—环境科学]