土壤-植物-大气连续体模型中的蒸散发计算

Method of Evapotranspiration Estimation in Soil-Plant-Atmosphere Continuum (SPAC)

土壤-植物-大气连续体(SPAC)中包括一系列的水分与能量交换过程。本文侧重探讨蒸发与蒸腾的过程及其定量。主要内容包括(SPAC)综合模型;各种蒸散发参数的确定;作物蒸腾量的确定;棵间土壤表面蒸发量的确定。用实际观测资料进行验算,得出比较符合实测过程的蒸发和蒸腾计算结果。

A series of processes of exchange of water and energy are contained in SPAC. This paper mainly deals with the processes and the determination of evapo-transpiration, which includes mainly: a comprehensive SPAC model, description and determination of the parametric equations of evapotransipiration, and estimation of actual evapotranspiration from field. Based on the measured data obtained from Qihe County, Shandong Province, the models of evapotranspiration are developed and the fairly results in comparison with measurements are obtained.