摘要
以2002年的6期ETM+遥感影像作为数据源,采用面向对象的解译方法,自动提取腾格里沙漠一年内6个时期的湖泊信息,对湖泊季节变化情况进行统计,并与巴丹吉林沙漠的湖泊季节变化进行对比分析.结果表明,腾格里沙漠湖泊的季节变化显著,湖泊总数量及总面积在夏季(6月)达最大值,在冬季(12、2月)最小;两大沙漠湖泊季节变化情况不尽相同,可能与两大沙漠湖泊水的补给方式存在差异有关,腾格里沙漠湖泊水量变化更多地受近源地下水的影响,而巴丹吉林沙漠湖泊水量变化则主要受远源地下水影响.
Based on object-oriented method, six ETM ＋ satellite images of the year 2002 were interpreted and analyzed to study the seasonal change of the lakes in Tengery Desert. Result indicates that lake level changed sharply over the years. That is, both the amount and the area of the lakes in Tengery Desert reached their summits in summer （June）, while the lowest amount and level in winter. This phenomenon differs from that of the Badain Jaran Desert, in which the lakes have their high level during winter. The difference to some extent explained the different replenishment patterns between the lakes in two deserts： lakes in Tengery Desert would be recharged by precipitation and adjoining ground water, but those in Badain Jaran Desert would be highly affected by long- distant ground water.
出处
《湖泊科学》
CAS
CSCD
北大核心
2012年第6期957-964,共8页
Journal of Lake Sciences
基金
高等学校博士点专项基金项目(20090211110025)
国家基础科学人才培养基金项目(J1030519)
国家自然科学基金项目(41101187)
国家环保公益性行业科研专项项目(201209034)联合资助
关键词
腾格里沙漠
湖泊
遥感
季节变化
Tengery Desert
lake
remote sensing
seasonal change
