| 近20年青海湖湖水面积变化遥感 |
| |
| 引用本文： | 刘瑞霞,刘玉洁.近20年青海湖湖水面积变化遥感[J].湖泊科学,2008,20(1):135-138. |
| |
| 作者姓名： | 刘瑞霞 刘玉洁 |
| |
| 作者单位： | 中国气象局中国遥感卫星辐射测量和定标重点开放实验室,国家卫星气象中心,北京,100081 |
| |
| 基金项目： | 国家自然科学基金项目(90102010)资助． |
| |
| 摘 要： | 采用NOAA/AVHRR资料,对青海湖湖面进行水体判识,并利用线性混合模式对混合象元进行处理,定量估算了近20年青海湖湖水面积并分析了变化趋势,表明近20年青海湖湖水面积在不断减小,每年减少约4km2,并且青海湖干涸部分主要在其北部.进一步采用主成分分析和回归分析方法对青海湖地区降水、气温和蒸发量做了初步气候分析,表明青海湖地区降水减少、气温升高、蒸发量增加是青海湖湖水面积逐年减少的主要原因.
|
| 关 键 词： | 青海湖 湖水面积减小 混合象元 气候分析 |
| 收稿时间： | 2006-12-01 |
| 修稿时间： | 2007-04-20 |
Area changes of Lake Qinghai in the latest 20 years based on remote sensing study |
| |
| LIU Ruixia and LIU Yujie.Area changes of Lake Qinghai in the latest 20 years based on remote sensing study[J].Journal of Lake Science,2008,20(1):135-138. |
| |
| Authors: | LIU Ruixia and LIU Yujie |
| |
| Institution: | Key Laboratory of Radiometric Calibration and Validation for Environmental Satellite, China Meteorological Adminisration National Satellite Meteorological Center, Beijing 100081, P. R. China and Key Laboratory of Radiometric Calibration and Validation for Environmental Satellite, China Meteorological Adminisration National Satellite Meteorological Center, Beijing 100081, P. R. China |
| |
| Abstract: | The water areas of Lake Qinghai in the past twenty years have been identified using NOAA/AVHRR satellite data. The results show that the area of Lake Qinghai has been decreased in these years, and the area of decreasing is mainly in the north of Lake Qinghai. To find out the climate elements which affect the area of Lake Qinghai, precipitation, temperature and evaporation in the region of Lake Qinghai are analyzed. The results show that increasing in temperature and evaporation, and the decreasing in precipitation are the main reasons for the decreasing in the area of Lake Qinghai. |
| |
| Keywords: | Lake Qinghai area decreasing mixed pixel climate analysis |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《湖泊科学》浏览原始摘要信息 |
| 点击此处可从《湖泊科学》下载免费的PDF全文 |
|
