估算区域蒸发蒸腾量的遥感模型对比分析  

Comparative analysis of regional evapotranspiration estimation models using remotely sensed data

作　　者：张晓涛[1] 康绍忠[2] 王鹏新[3] 佟玲[1] 

机构地区：[1]西北农林科技大学旱区农业水土工程教育部重点实验室,杨凌712100 [2]中国农业大学农业水问题研究中心,北京100083 [3]中国农业大学信息与电气工程学院,北京100083

出　　处：《农业工程学报》2006年第7期6-13,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金项目(50339030;90202001)

摘　　要：蒸发蒸腾量是地球表面水量和能量平衡中的重要分量。蒸发蒸腾通过水文循环影响着区域乃至全球的气候、生态及农业生产。与传统的地面点观测手段相比,利用遥感监测区域蒸发蒸腾具有快捷、宏观、经济等优势和特点。该文在阐述利用遥感研究蒸发蒸腾的基本原理和方法的基础上,综述了国内外常用的遥感蒸发蒸腾模型,并着重对SEBAL、V ITT等模型进行了评述和对比分析,指出了利用遥感研究区域蒸发蒸腾中存在的问题。Evapotranspiration plays a significant role in the earth＇s water and energy balance system. It affects regional and global climate, ecological environment and agricultural yield through the hydrological cycle. Remote sensing technique, which can provide representative regional surface parameters, has proven to be the only suitable approach to the estimation of large-area ET. This article summarizes and evaluates widely used models that were applied for predicting regional ET using satellite remotely sensed data and routine meteorological data, such as SEBAL and VITT. It is evident that quantitative ET retrieval with remotely sensed data at large scale has manifested its great prospect.

关 键 词：区域蒸发蒸腾 遥感 单层模型 双层模型 SEBAL VITT 

分 类 号：S127[农业科学—农业基础科学]