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实际蒸散发(ET)是水文循环的关键环节,分布式量化ET是区域水量平衡计算的重要内容。本文基于Budyko水热耦合方程推算单作物系数,在单作物系数和基于遥感方法的叶面积指数(LAI)之间进行统计回归,建立计算LAI的模式,实现Budyko方程进行区域ET估算的空间分辨率提升。洮河流域的范例研究证实了两种方法耦合在复杂地理-生态区间应用的合理性。本文为区域ET的分布式量化研究提供了一种新的思路。
The actual evapotranspiration (ET) is a key part of the hydrological cycle. Distributed quantitative ET is an important part of regional water balance calculation. Based on the Budyko equation of hydrothermal coupling, the single crop coefficient was calculated, and the LAI was calculated by regression between the single crop coefficient and the LAI. The LAI model was established and the spatial resolution of the Budyko equation was calculated Enhance. A case study in the Ba River Basin confirmed the rationality of coupling the two methods in complex geo-ecological applications. This article provides a new way of thinking for the distributed quantitative research of regional ET.