基于SCE-UA算法新安江模型在沣河流域的应用

Application of Xin'anjiang model based on SCE-UA algorithm in Feng River Basin

为了探索人工试错法和基于SCE-UA算法的自动优选法这两种方法在混合产流地区的拟合效果,选取新安江模型对半湿润半干旱地区陕西沣河流域进行参数优化。探讨基于SCE-UA算法的新安江模型在沣河流域的适用性,重点分析了参数的变化情况,发现两种方法模拟的次洪参数SM、CS变化较大。研究结果表明:基于SCEUA算法的新安江模型在沣河流域适用性较好,相对人工试错法参数取值更加合理,提高了优化速度与模拟精度,具有简便、高效的特点。

In order to explore the fitting effects of the artificial trial and error method and automatic optimization method based on SCE-UA algorithm in the mixed runoff area,the semi-humid and semi-arid Feng River Basin in Shaan＆#39;xi Province was selected to optimize the parameters using Xin＆#39;anjiang model.This paper discusses the applicability of the Xin＆#39;anjiang model based on the SCE-UA algorithm in the Feng River Basin, and analyzes the variation of the parameters especially.It is found that the parameters of SM and CS simulated by the two methods were large.The results show that the Xin＆#39;anjiang model based on SCE-UA algorithm has good applicability in Feng River Basin, and it is reasonable to compare the parameters of artificial test and error method and improve the optimization speed and simulation precision, which is not only simple but also efficient.