半干旱半湿润流域水文模型应用与比较

Application and comparison of hydrological models for semi-arid and semi-humid regions

将6种不同的水文模型分别应用于半干旱半湿润的大阁、戴营、阜平和东湾流域。结果表明,在大阁这样的超渗产流流域,没有一种水文模型能够成功应用,混合产流模型的精度稍高于蓄满产流模型;在戴营和阜平这样的混合产流流域,混合产流模型与蓄满产流模型的精度差不多;在东湾这样的半湿润流域,蓄满产流模型精度上升,混合产流模型精度下降。TOPMODEL和SAC模型在这些流域不能得到令人满意的结果。

Six hydrological models were applied to Dage, Daiying, Fuping and Dongwan watersheds in semi- arid and semi-humid regions in China. The results show that in some watersheds under infiltration-excess runoff mechanism such as Dage, none of these models can simulate the rainfall-runoff relationships successfully, and the accuracy of mixed runoff model is somewhat higher than that of stored-full runoff model. In mixed runoff watersheds as Daiying and Fuping, the accuracy of mixed model is no better than the stored- full. In semi-humid regions as Dongwan watershed, the accuracy of stored-full model is improved whereas that of mixed model is lowered. TOPMODEL and SAC models cannot achieve satisfactory results in these regions.