It adopts Holton model to calculate infiltration rate and remains, water balance equation and linear reservoir to calculate runoff, every parameter has a clear physics meaning and geography rule.

• 采用霍尔坦模型计算下渗率及截留量，水量平衡方程和线形水库进行栅格产汇流计算，模型的每个参数具有明确的物理意义和地理规律。