干旱区生态环境知识资源中心

Based on the hydrological data of four basins: Luanchuan, Wangyao, Lanhe river (located in Yellow River watershed) and Shangyi (in Yongding watershed), the Xinanjiang model, the Saturation - excess and Infiltration - excess Simultaneously model (SISM), the Vertical Mixed model (VMM), the ARNO model and the VIC model were introduced and validated at four different climate regions. The performance of these five models and the processes of rainfall - runoff simulated by three mixture models were analyzed. Results show that the simulated precision of all selected models axe higher in the semi - humid region, while the results of the mixture models considering the infiltration capacity distribution are improved, but not yet obtain satisfactory results in the semi - arid region. The three different mixture models reflect the different runoff generation process. Both the SISM and the VMM reflect the relation of the rainfall intensity and the infiltration rate, the rainfall and the soil storage; the VIC model reflects the area proportion relation of different runoff generation mechanisms in different climate zones.