摘要
达来诺尔是浑善达克地区重要的湖泊之一,利用遥感技术,通过近红外单波段灰度阈值法对达来诺尔的水域面积进行了分析。研究表明:单波段灰度阈值法可以简单快速地实现湖泊水体信息的提取和水域面积的变化研究,1975年,1987年,2001年和2008年四期遥感影像表明达来诺尔水域自1975年以来一直在萎缩,尤其是进入21世纪以后,湖泊的四周水域均发生明显的变化,湖泊萎缩和干涸是人类必须面临的重要环境问题之一。随着气候变暖和人口压力的增加,浑善达克沙地湖泊湿地的保护和生态环境的可持续发展必将面临更为严峻的考验。
The changes of the area of Dalainur,one of the key lakes in Otintag Sandy Land,were analyzed in this paper based on remote sensing technology.The results show that the information about the lake and its changes in area of water body can be achieved quickly and conveniently by the method of single near infrared grayscale threshold.Satellite images of remote sensing,acquired by Landsat in 1975,1989,2001 and 2008,presented that Dalainur had been shrinking since 1975.Especially with the advent of the 21st century,the lake began to change significantly on all sides.Lakes shrinking and drying up are the important environmental issue that human has to cope with seriously.Under the pressure from global warming and population growth,the lake and wetland protection in Otintag Sandy Land and its local eco-environment sustainable development will face the greater challenges.
出处
《水土保持研究》
CSCD
北大核心
2011年第6期196-199,共4页
Research of Soil and Water Conservation
基金
国家自然科学基金(40961014)
内蒙古师范大学高层次人才科研启动经费项目(GCRC09003)
关键词
遥感
达来诺尔湖泊
水域面积
变迁
remote sensing
Dalainur Lake
water body area
change
