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提出和建立了一个新的三层耦合流域水文模型，简称为耦合模型，它以土壤层的含水量作为描述流域系统在降雨、径流转换过程中物理特征的状态变量，用三个耦合的线性常微分方程来描述整个流域系统将降雨转化为径流的反应机制．该模型具有概念清楚，结构简单，假设合理，模拟精度较高等优点．
A new three-layer coupled basin hydrological model is proposed and established, which is referred to as the coupling model for short. It uses the soil layer water content as the state variable describing the physical characteristics of the basin system during rainfall and runoff conversion. Differential equations to describe the entire basin system will be transformed into runoff rainfall response mechanism. The model has the advantages of clear concept, simple structure, reasonable assumption and high simulation accuracy.