都兰河希赛区蒸散量的分布特征及其驱动因子  

Distribution Characteristics and Driving Factors of Evapo-Transpiration in Xisai Sub-Region of Dulan River

作　　者：金晓媚[1] 刘金韬[2] 郭任宏 

机构地区：[1]中国地质大学(北京)水资源与环境学院,北京100083 [2]水利部水利水电规划设计总院,北京100120

出　　处：《人民黄河》2014年第4期50-52,88,共4页Yellow River

基　　金：国家自然科学基金资助项目(41372250)

摘　　要：基于MODIS遥感数据,应用表面能量平衡系统对柴达木盆地都兰河希赛区2001—2011年的区域蒸散量进行了计算,并分析了其影响因素。结果表明:都兰河希赛区11 a间的年蒸散量呈逐渐增长趋势,由2001年的94.61 mm增加到2011年的266.80 mm;都兰河希赛区的蒸发系数为0.115;区域蒸散量与气温、降水、相对湿度等气象因子呈正相关关系,复相关系数分别为0.659、0.635、0.543;区域蒸散量随着地表植被指数的增大而增大,随着地下水位埋深的增加而减小。Based on MODIS data, the annual evapotranspiration of Xisai subregion was estimated during the period of 2001--2011 using Surface Energy Balance System and the impact factors of ET were also analyzed in this paper. The results indicate that： a）The annual evapo-transpiration increases between this 11 years and it increases from 94.61 mm of 2001 to 266.80 mm of 2011; b）The evaporation coefficient of Xisai Subregion of Dulan River is 0.115 ; c）The annual evapotranspiration is positive correlation with air temperature, precipitation and relative humidity, the cor- relation coefficients are 0.659, 0.635 and 0. 543, respectively; d） The annum evapo-transpiration increases with NDVI increase and it decreases with the groundwater deoth.

关 键 词：表面能量平衡原理 MODIS 驱动因子 分布特征 蒸散量 都兰河希赛区 

分 类 号：P426.2[天文地球—大气科学及气象学]