中文摘要：

传统的概念性水文模型描述降雨径流过程时做了很多简化，因此在实际应用中也存在许多不足之处。张文华对传统的产汇流模型做出了一些改进：将霍顿下渗能力曲线与实际的下渗曲线的有机联系在一起，建立了考虑前期土壤含水量和变雨强的产流计算方法：地下汇流计算增加考虑了地下径流量在进入含水层前的填蓄过程；地表汇流计算将等流时线法与单位线法有机地结合起来，从而同时考虑了下垫面的调蓄和推移作用；河道汇流采用非线性化的槽蓄方程进行演算。本文将张文华提出的一系列产汇流计算方法进行耦合，组成了一种新的概念性水文模型。模型主要由公式推导所得，物理机制较强．在长江中游龙河流域应用时峰现时差为2．5小时，确定性系数为76．6％，结果表明模型比较可靠。

英文摘要：

A new conceptual hydrological model with improved traditional rainfall-runoff theory is presented in this paper. It calculates runoff based on the Horton infiltration capacity curve, and gives the mathematical expressions of time-interval runoff and the time of runoff generation through analyzing actual infiltration curve. The lag time of the effective rainfall in the unsaturated zone and the groundwater flow routing equation are also presented. In this model, surface water concentration combines isochronal method and unit-hydrograph method organically considering the regulation and lapse effect on surface water. Channel flood routing depend on non-linear channel storage equation of Muskingum method. All the parameters are obtained through combination of formulas and optimal selection. Application of the model to Longhe basin shows that the model is reliable.