SEBAL模型在干旱区区域蒸散发估算中的应用

蒸散发是水量平衡和能量平衡的重要环节,传统的计算方法只能以点为基础进行计算。为排除蒸散发空间变异特性的影响,在遥感技术的基础上,引入了基于地表能量平衡原理的SEBAL模型,对新疆焉耆盆地的日蒸散发情况进行了计算模拟,获取了相关地面特征参数及日蒸散量,并根据盆地内具有大面积湖泊这一实地情况对模型进行了改进。

The SEBAL Model for Estimating Regional Evapor-transpiration in Arid Regions

Evapor-transpiration is the important link of the water balance and energy balance.The traditional methods are based on point measurement.In order to remove the influence of the space variation characteristic of steams,based on the remote sensing technology,we have introduced the SEBAL model which based on the surface energy balance principle,and computed the daily evaporation in Yanqi basin of Xinjiang,thus gained the related ground characteristic parameter and the daily evaporation,and according to the basin where big lack situated the improvement to the model was made.