Effect of Grass on Reducing Runoff and Sediment and its Critical Flow Shear Stress

Pei Qing Xiao; Er Yang; Peng Jiao

doi:10.4028/www.scientific.net/AMR.1010-1012.1145

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1010-1012Effect of Grass on Reducing Runoff and Sediment...

Effect of Grass on Reducing Runoff and Sediment and its Critical Flow Shear Stress

Abstract:

Reduction effects of grass on runoff and sediment yield and its mechanical mechanism of grass was studied under rainfall intensities of 45, 87 and 127mm/h with 20°slope gradient using simulated rainfall experiment. the results showed that average runoff rates ranged from 39.7 to 126.0 L/min for bare plots and 0.34 to 6.22 L/min for grass plots, and the runoff rates from grass plots were much less than from bare plots. Average sediment yields varied from 3636.7 to 9436.3 g/min for bare plots and from 26.7 to 581.5 g/min for grass plots. The critical flow shear stress of 2.85 N/m² on grass slope and 0.861 N/m² on bare slope were got under experiment condition. The sediment yield increased with the increase of flow shear stress. The experiment results are meaningful for quantifying runoff and sediment reduction and deepening soil erosion mechanical process also.

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Periodical:

Advanced Materials Research (Volumes 1010-1012)

Pages:

1145-1148

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1010-1012.1145

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Online since:

August 2014

Authors:

Pei Qing Xiao, Er Yang, Peng Jiao

Keywords:

Flow Shear Stress, Grass, Runoff, Sediment Yield

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References

[1] T.M. Zobeck and C.A. Onstad. Tillage and rainfall effects on random roughness：A review. Soil and Tillage Research, Vol. 9 (1987), pp.1-20.

DOI: 10.1016/0167-1987(87)90047-x

Google Scholar

[2] C.Z. Pan and Z.P. Shangguan. Influence of forage grass on hydrodynamic characteristics of slope erosion. Journal of Hydraulic Engineering, Vol. 36 (2005, pp.371-377.

Google Scholar

[3] M. Li, W.Y. Yao, J.N. Chen and W.F. Ding. Experiment study on runoff resistance of hill-gully slope with grass coverage. Journal of Hydraulic Engineering, Vol. 38 (2007), pp.112-119.

Google Scholar

[4] Sediment and the hydrodynamic characteristic mechanism of slope runoff in the standard slope plot. Journal of Beijing Forestry University, Vol. 29 (2007), pp.99-104.

Google Scholar

[5] L.L. WANG, W.Y. YAO, Z.Z. SHEN. Effects of grass coverage on shallow flow hydraulic parameters and sediment reduction. Science of Soil and Water Conservation，Vol. 7 (2009), pp.80-83.

Google Scholar

[6] M. Neave and A.D. Abrahams. Vegetatition influences on water yields from grassland and grassland ecosystems in the Chihuahuan Desert. Earth Surface Processes and Landforms, Vol. 27(2002), pp.1011-1020.

DOI: 10.1002/esp.389

Google Scholar

[7] Z. Z Shen., P. L Liu., Y.S. Xie, S. Q Zheng and T.J. Ju. Study of Plot Soil Erosion Characteristic under Different Underlying Horizon. Bulletin of Soil and Water Conservation, Vol. 26 (2006), pp.6-9.

Google Scholar

[8] M.A. Nearing, L.D. Norton, D.A. Bulgakov, G.A. Larionov, L.T. West, and K.M. Dontsova. Hydraulics and erosion in eroding rills, Water Resources Research，Vol. 33 (1997), pp.865-87697. p.

DOI: 10.1029/97wr00013

Google Scholar