Simulation results of water yield, sediment yield and other natural processes in the Lianshui basin, China were presented for analysis of their tempo spatial variation and simulation accuracy. Simulation needs a warm up'stage at the begin ning, especially for simulation of sediment yield. Simulation accuracy decreases with the number of years in simulation. For sim ulation of water yield, the mean accuracy over 3 years is 98.32%, and over 8 years it is 90.27%, while for simulation of sedi ment yield, the mean accuracy over 2 years is 88.83%, and over 8 years it is 82.51%, which suggests that the method can be used to medium or long term dynamic monitoring of water and sediment yields in a basin. As for monthly simulation accuracy, the mean over 3 years is 83.84% and the mean over 8 years is 86.05% for water yield, and the mean over 2 years is 68.80% and the mean over 8 years is 59.70% for sediment yield. Simulation results of the method can also be applied for natural re sources management in a basin.