Effect of Grass Coverage on the Sediment Concentration in Overland Flow

Mian Li; Wen Yi Yao; Er Yang; Wen Feng Ding; Jiang Nan Chen

doi:10.4028/www.scientific.net/AMR.518-523.4823

Paper Titles

Variation in Soil Phosphorus Forms in Larix olgensis Plantations in Eastern Montane Area of Northeast China
p.4801

Combination Measures of Plant Buffer Strips and Agronomic Management to Control Soil and Nutrient Losses of Sloping Land
p.4806

Combine Empirical Equation with Experiment for Prediction of Soil Saturated Hydraulic Conductivity
p.4815

Deposition Prediction of Debris Flow Alluvial Fan Based on Experimental Study
p.4819

Effect of Grass Coverage on the Sediment Concentration in Overland Flow
p.4823

Water and Soil Conservation Characteristics for Two Typical Subtropical Forests in Southeast China
p.4827

Game Analysis on Benefit of Chinese Wetland Ecological Compensation
p.4835

An Application of RSR Method in Environmental Pollution Health Damage
p.4839

Approaches for Chinese Agricultural Nonpoint Source Pollution
p.4843

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 518-523Effect of Grass Coverage on the Sediment...

Effect of Grass Coverage on the Sediment Concentration in Overland Flow

Abstract:

By scouring experiments, the changeable process and characteristics of sediment concentration in sloping surface with different coverage degrees and spatial locations of grass were studied. Five grass coverage degrees of 0, 30%, 50%, 70%, 90%, three spatial locations of grass (upslope, mid-slope, low-slope) and two water inflow rates of 3.2L/min, 5.2L/min were applied to a 0.5 by 4 m soil bed in scouring experiments. Results showed that the sediment concentration in overland flow obviously decreased with increasing grass coverage degree during the scouring experiments. When the grass coverage degree is over 30%, the grass can play obvious role in reducing the sediment concentration, and along with the increase of grass coverage degree the role became more and more obvious, particularly when the grass coverage degree reached to 70%. The spatial location of grass on the sloping surface has little effect on the sediment concentration in overland flow.