摘要
计算机模型已成为预测分析流域水文过程的重要手段之一。用基于Matlab程序的Shuffled Complex Evolution(SCE-UA)全局最优参数率定方法,首次得出了将SIMHYD模型应用于黄河流域时的参数最优率定值。模拟了黄河一级支流亳清河流域的月径流变化过程,并总结了SIMHYD模型的适用条件。结果表明:1SIMHYD模型可以较好的模拟亳清河流域的月径流,率定期与验证期NSE效率系数都大于0.7,相对误差在5%以内。2SIMHYD在应用时应确保率定期尽量要包括各种水文年份;注意人类活动对流域水文特征的改变,保持资料的一致性;模型对入渗系数、最大入渗损失和土壤持水能力等3个参数较敏感。3SIMHYD是一个概念化的集总式水文模型,因此不宜应用于大面积流域中。
Simulation is an important way to predict and analyze hydrological processes of catchments .The Shuffled Complex Evolu‐tion （SCE-UA） method based on the MATLAB program is used to obtain the optimum parameter values when SIMHYD model is ap‐pled in the Yellow River basin .The modeled monthly runoff results of Boqing River catchment and the application conditions are giv‐en in this paper：① SIM HYD model can make acceptable monthly runoff prediction ,the NSE and ERR in calibration and validation periods are both more than 0 .7 and less than 5% respectively .② The calibration time should be long enough and contain various hydrological conditions .Human activities may change the hydrological characteristics of the catchment ,thus consistency of the data should be ensured .The three parameters include SQ ,COEFF and SUB should be calibrated precisely during application in the Yellow River basin .③SIM HYD is a conceptual lumped hydrological model ,thus it cannot be applied in large area catchment .
出处
《中国农村水利水电》
北大核心
2015年第6期75-80,共6页
China Rural Water and Hydropower
