中文摘要：

采用敏感性分析方法对复杂模型和系统的输入和输出进行定性和定量的分析，有利于模型结构的诊断、模型参数的识别和模型的应用。现以桓仁水库流域为例，使用Sobol方法，以确定性系数、总水量误差系数、低水误差系数和高水误差系数作为敏感性分析模型的目标函数，分别对模型单参数和多参数的敏感性进行了评价。结果表明不同目标函数下参数的敏感性不同；Sobol能定量地给出参数的总敏感度和参数间相互作用的敏感度，适合于分析水文模型的参数敏感性。

英文摘要：

Sensitivity analysis was performed to analyze the inputs and outputs of the complex model and system qualitatively and quantitatively ,which can benefit the inspection of model structure ,identification of model parameters ,and model application .In this paper ,Sobol method was applied to evaluate the sensitivity of single parameter and multiple parameters of the model in the Huanren reservoir catchment .The objective functions of sensitivity analysis included the deterministic coefficients and error co-efficients of total water ,low flow ,and high flow .The results showed that the sensitivity of parameters was different under dif-ferent objective functions ,and Sobol method can provide the sensitivity for all parameters and sensitivity between each parame-ter ,which is useful for sensitivity analysis of hydrological models .