基于MODIS影像的西藏羊卓雍湖面积变化与成因分析  

Research on Area Change and of Reason Analysis Yangzhuoyongco Lake Based on MODIS Images

作　　者：拉巴[1] 德吉央宗[1] 次珍 拉巴卓玛[1] 

机构地区：[1]西藏高原大气环境科学研究所,拉萨850001 [2]拉萨市气象局,拉萨850001

出　　处：《高原山地气象研究》2011年第1期66-68,共3页Plateau and Mountain Meteorology Research

基　　金：国家自然科学基金项目(40761005);中国气象局新技术推广项目(CMATG2008M52);西藏自治区气象局2009年局设项目

摘　　要：分析2002～2009年MODIS卫星数据和2000～2009年气象数据分析可得:西藏羊卓雍湖面积在近8年呈显著减小趋势,8年内面积减小了96.61km2;湖泊所在的浪卡子气象站气温、地表温度呈升高趋势,降水量、相对湿度呈减少趋势。在降水量减少、气温升高的情况下由于降水量减少的幅度要远大于蒸发量的减少,是2000～2009年内湖泊面积下降的主要原因之一;本研究也证明了MODIS资料可以作为研究湖泊面积变化的补充数据源。According to the 2002-2009 MODIS satellite remote sensing data and of meteorological data from 2000 to 2009,the article concludes that the area of Yangzhuoyongco lake is getting smaller in eight years,the area of Yangzhuoyongcuo lake reduced 96.61km2 in eight years;the temperature and the surface temperature present enlarging trend,while the precipitation,relative humidity present reducing trend.With precipitation reducing and temperatures increasing,the reduction of rainfall is much more than the reduction of the evaporation,which is the reason of the reduction of the area of yangzhuoyongco lake.This study also proves the data of MODIS can be used as supplementary data sources of the research of the area of lakes changing.

关 键 词：西藏 羊卓雍湖 湖泊面积 浪卡子 

分 类 号：P407[天文地球—大气科学及气象学]