中文摘要：

传统的估算蒸散发的方法虽然能够获取相对准确的均匀下垫面的蒸散发，但大多局限于点或田间尺度，难以反映蒸散发的空间异质性。遥感作为一种高效的空间信息获取和处理手段，被认为是估算陆面蒸散发的有效途径。近30多年来，随着技术的进步，发展了从简单的经验公式到结合陆面过程模型的陆面数据同化系统等基于遥感数据估算蒸散发的方法。本文总结了遥感估算地表蒸散发各种方法的输入数据、假设、原理、优缺点，并概括了遥感估算陆面蒸散发存在的主要问题和发展趋势。

英文摘要：

Traditional estimation of evapotranspiration is able to obtain a relatively homogeneous underlying surface evapotranspiration, but is mostly limited to the point or field scale and di℃ult to represent the spatial heterogeneity of evapotranspiration. Remote sensing as an e℃ient means of spatial information acquisition and processing is considered to be an effective way to estimate land surface evapotranspiration. Over the last three decades, a variety of methods have been developed for estimating evapotranspiration using remotely sensed data, from simplified empirical equation to complex methods based on land data assimilation system along with the land surface model. In this paper, we discussed the main inputs, assumptions, theories, advantages and disad-vantages of each method and generalized the main problems and the development trends of evapotranspiration estimation using remotely sensed data.