区域蒸发计算方法的研究

Research on the method for estimating regional evapotranspiration

以朱小堰蒸发试验小区的实验数据为基础,以太阳辐射总量和水面蒸发为主要参变量,建立了计算区域蒸发的半经验公式,并以安徽省24个小区域站对其应用的普遍性进行了检验。根据公式的数学特征,讨论其对应的物理意义和区域蒸发的空间变化规律。通过在安徽省13个面积为2349km2-2727km2分区的水资源评价中的应用,进一步验证了该方法的合理性。

Based on the monitoring date from Zhuxiaoyang evaporation plot, a semi-experimental equation, which treats solar radiation and free water surface evaporation as the main parameters, is constructed for estimating regional evapotranspiration, and its universality in application is test empirically by 24 small-catchments in Anhui Province. According to the mathematical characteristics of the equation, the physical implication and the special varying regulation of regional evapotranspiration are discussed. Been applied in water resources evaluation of Anhui Province, which has 13 estimation regions that the area of each region is between 2349km^2 to 2727km^2 , the rationality of the equation is further examined.