摘要
为了模拟流域产流的空间变化,本文从土壤物理学与水文学相结合的途径出发,将标定理论引入流域产流计算中,用一个反映土壤特性空间变异程度且符合对数正态分布的标定因子将流域划分单元,通过对单元下渗曲线的标定和应用,建立了一个考虑土壤特性空间变异的流域产流模型。经在两个实际流域的初步应用证明,本模型具有物理概念明确,弹性大,适应面广,能够直接模拟产流面积的变化等特点,已获得较满意的计算结果。
In this paper the scaling theory is introduced into the computation of watershed runoff production in order to simulate the spatial variation of the latter by combining soil physics with hydrology. The scale factor, representing the extent of spatial variation of soil property and with a log-normal probability distribution, is used for dividing the watershed into units. A model of watershed runoff production, considering the spatial variation of soil propiperty, is developed by means of scaling the unit infiltration curve. The preliminary application of this model to two natural watersheds shows some characteristics, such as ,definite physical concept, convenience for parameter fitting, wide range of application etc. The model can also directly simulate the spatial variation of runoff area. The result obtained is satisfactory.
出处
《水利学报》
EI
CSCD
北大核心
1989年第10期1-8,共8页
Journal of Hydraulic Engineering
