Influence of different drainage conditions on soil erosion and nutrient loss of slope land;

Research on the nutrient loss from purple soil under differentrainfall intensities and slopes;

A study on the effect of the Vetiver zizanioides contour hedgerow on the soil and nutrient loss control;

Based on the observation in runoff plots in the western hills of Sichuan Province in 2003, the feature of runoff, sediment yield and the nutrient losses in different patterns of forest (bamboo)-grass compound management were analyzed.

More importantly, features of surface runoff and sediment yield, nutrient losses and factors which influenced these features were discussed.

Through field survey and experiments, the mechanism and space─ time variation of soil nutrients losses are analyed.

In order to study the law of soil nutrients loss in red-soil slop land,the field experiments under three ecological measures and three typical rainfalls were performed to investigate the N and P transfer process in Soil Conservation Ecological Science&Technology Demonstration Park in Jiangxi Province from 2006 to 2007.

In this study, field experiments were conducted to investigate runoff and sediment producing processes and different forms of nutrients loss in the shrub plots with 30% or 80% covered by the native shrub Caragana korshinskii and bare soil plot (control) at a slope of 15°under simulated rainfall intensity of 60 mm/h, 100 mm/h, and 140 mm/h.