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Effectiveness of grass strips in trapping suspended sediments from runoff
sediment-laden flow with high concentrations on steep slopes; (2) to illustrate the effectiveness of grass litter or/and leaves in trapping sediment; (3) to analyze the relationship between sediment trapping efficiency and the particle size and flow
characteristics, as well as the sediment trapping mechanism of vegetative filter strips.
[b1] Key Lab. of Water and Sediment Sciences, College of Water Sciences, Normal Univ., Beijing, Chine
[b2] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

The performance of grass filter strips in controlling high-concentration suspended sediment from overland flow under rainfall/non-rainfall conditions
Flume experiments on simulated grass strips were conducted using combinations of 3 slope gradients, 5 slope positions (from upslope to downslope), 2 flow rates and different sediment concentrations under simulated rainfall and non-rainfall
conditions. The results showed that sediment deposition efficiency increased with vegetative filter strips (VFS) width as a power function. Rainfall significantly reduced sediment deposited within VFS. Higher sediment concentration corresponded to a larger
sediment deposition load but reduced deposition efficiency. Flow rate had a negative effect on deposition efficiency but no effect on deposition load. Sediments were more easily deposited at the upper slope position than downslope, and the upper slope
position had a higher percentage of coarse sediments. Flow velocity was the most sensitive factor impacting sediment deposition. The results from this study should be useful to control sediment flowing into rivers in areas with serious soil erosion.
[b1] Key Lab. of Water Sediment Sciences, College of Water Sciences, Normal Univ., Beijing, Chine
[b3] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

China ; Loess ; Model ; Plateau ; Rill wash ; Sediment transport ; Shaanxi ; Soil erosion ; Solution load ; Splash ; Water erosion
. This study provides a new approach to the modelling of chemical transport by investigating the effects of raindrops on sediments from soil in surface runoff.
[b2] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

The aim of this research was to use 7Be as a tracer to partition the sediment removed from bare, hand-cultivated, loessal soil plots by either interrill or rill erosion processes and to estimate their proportions in (1) the total soil loss, (2
) the deposited material in a depositional area, (3) the suspended sediment carried beyond the depositional area and, where practical, the temporal variation in these processes. Furthermore, the measured quantities of eroded material were compared to those derived
[b2] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

[b1] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

[b1] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine
[b2] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, Northwest Univ. of Agriculture and Forestry, Shaanxi, Yangling, Chine

[b1] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

[b3] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

[b2] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

[b2] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

[b1] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

[b1] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

[b1] State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine

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