本文对流域状态和最优化特性是如何影响模型功能方面进行了研究 .在假设流域诸多初始条件下 ,使用SCE UA优化算法通过日模型率定新安江模型 .结果发现流域的初始条件和最优化特性对待优化的参数有非常大的影响 ,并且使模型过程参数的响应程度变小 .研究结果表明变化的初始条件对总产流的影响并不是太大 In this paper, we study how basin states and optimization characteristics affect the function of the model.Using SCE UA optimization algorithm to determine the Xin'anjiang model by daily model under the assumption of many initial conditions in the basin, we find that the initial conditions and the optimal characteristics of the basin The parameters of the optimization have a very big impact, and the response of the model process parameters become smaller.The results show that the initial conditions of change on the impact of total output is not too large