水均衡法验证蒸散量计算的可靠性——以张掖盆地为例  

Accuracy Verification of Evapotranspiration Result Using Hydrological Budget Method——A Case Study of the Zhangye Basin

作　　者：金晓媚[1] 万力[1] 梁继运[1] 

机构地区：[1]中国地质大学水资源与环境学院,北京100083

出　　处：《现代地质》2008年第2期299-303,共5页Geoscience

基　　金：国家自然科学基金项目(40772158)

摘　　要：蒸散量的计算方法有很多种,表面能量平衡系统(SEBS)是近年来应用较为广泛的计算蒸散量的方法之一。SEBS是应用卫星对地观测的可见光、近红外和热红外波段资料,结合实测气象数据或大气模式输出数据,根据表面能量平衡原理估算不同尺度的地表大气湍流通量,从而估算地表相对蒸散的一种方法。将水文数据与遥感数据相结合,运用SEBS方法对张掖盆地的区域蒸散量进行了估算,并在水均衡原理的基础上,对蒸散量计算结果的准确性进行了验证。结果表明:SEBS方法计算的蒸散量与水均衡法计算出的蒸散量结果吻合较好,从而验证了SEBS方法计算盆地蒸散量的准确性。Among many methods of evapotranspiration （ET） estimation,surface energy balance system（SEBS） is one of the widely used methods in recent years.Based on the land surface energy balance theory,SEBS is applied to estimate land surface turbulent flux and the relative evapotranspiration at different scales using visible light,near and far infrared satellite remote sensing data,the in-situ meteorological data or the product of atmospheric numerical model.Combining with hydrological data and remote sensing data,this paper estimated the regional evapotranspiration of the Zhangye basin using SEBS,and verified the accuracy of evapotranspiration result based on the principle of hydrological budget.The result indicates that the evapotranspiration by SEBS is consistent with that by hydrological budget method,which verified the accuracy of SEBS in basin evapotranspiration estimation.

关 键 词：蒸散 SEBS 水均衡法 张掖盆地 

分 类 号：P333.1[天文地球—水文科学]