Research and development of the auto-control system for artificial rainfall simulation;

According to the artificial simulation of rainfall experiment on different vegetation patterns slope face,this paper studied the effects of vegetation patterns to infiltration,runoff and sediment production.

The characteristics of rainfall simulator devices and sediment and yield runoff on farmlands were studied by adopting artificial simulation of rainfall in the semi-arid area of Dingxi,Gansu province.

In field conditions, rainfall simulation experiments were conducted to study the influence of slope, rainfall and tillage on infiltration in sloping farmland of purple soil.

On the basis of field investigation, slope runoff plot observation and simulated rainfall experiment, this paper studies wheat stubble and straw effects on surface flow and sediment in the slope wheat land, which will contribute to selecting optimum farming method in the loess plateau.

The vegetation cover and management factor C of soil were studied under different land use pattern with simulated rainfall in low hill red soil area, and the sustainability of the different land use methods using the factor C value was assessed.

13 simulated rainfall experiments with different rainfall intensities and durations are completed in a 5 m×10 m experimental plot in mountainous area of North China.