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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29416


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16247
Plants Cover Effects on Overland Flow and on Soil Erosion under Simulated Rainfall Intensity
Abstract:
The purpose of this article is to study the effects of plants cover on overland flow and, therefore, its influences on the amount of eroded and transported soil. In this investigation, all the experiments were conducted in the LEGHYD laboratory using a rainfall simulator and a soil tray. The experiments were conducted using an experimental plot (soil tray) which is 2m long, 0.5 m wide and 0.15 m deep. The soil used is an agricultural sandy soil (62,08% coarse sand, 19,14% fine sand, 11,57% silt and 7,21% clay). Plastic rods (4 mm in diameter) were used to simulate the plants at different densities: 0 stem/m2 (bared soil), 126 stems/m², 203 stems/m², 461 stems/m² and 2500 stems/m²). The used rainfall intensity is 73mm/h and the soil tray slope is fixed to 3°. The results have shown that the overland flow velocities decreased with increasing stems density, and the density cover has a great effect on sediment concentration. Darcy–Weisbach and Manning friction coefficients of overland flow increased when the stems density increased. Froude and Reynolds numbers decreased with increasing stems density and, consequently, the flow regime of all treatments was laminar and subcritical. From these findings, we conclude that increasing the plants cover can efficiently reduce soil loss and avoid denuding the roots plants.
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References:


[1] Abrahams, A.D., Parsons, A.J., Wainwright, J., (1994). Resistance to overland flow on semiarid grassland and shrub land hillslopes, Walnut Gulch, southern Arizona. Journal of Hydrology 156, pages: 431–446.
[2] Adekalu, K. O., I. A. Olorunfemi, and J. A. Osunbitan. (2007). Grass mulching effect on infiltration, surface runoff, and soil loss of three agricultural soils in Nigeria. Bioresource Tech. 98(4): 912-917.
[3] Gilley, J.E., Kottwite, E.R., Simanton, J.R., (1990). Hydraulic characteristics of Rills. Transactions of the ASAE 33 (6), 1900–1906.
[4] Govers, G., (1992). Evaluation of transport capacity formulae for overland flow. In: Parsons,Abrahams. A.J., A.D. (Eds.), Overland flow: Hydraulics and Erosion Mechanics. UCL Press, London, UK. 243–273.
[5] Govers Gerard, Rafael Giménez ,Kristof Van Oost (2007). Rill erosion: Exploring the relationship between experiments, modelling and field observations. Earth-Science Reviews 84 87–102
[6] Gyssels G, Poesen J, Bochet E et al. (2005) Impact of plant roots on the resistance of soils to erosion by water: a review. Prog Phys Geogr 29:189–217
[7] Li, G., A. D. Abrahams, and J. F. Atkinson. 1996. Correction factors in the determination of mean velocity of overland flow. Earth Surf. Proc. Land. 21(6): 509-515.
[8] Ligdi. Etafa Emama, R.P.C. Morgan, (1995) Contour grass strips: a laboratory simulation of their role in soil erosion control. Soil Technology 8, pages 109-117
[9] Liu. G, F. X. Tian, D. N. Warrington, S. Q. Zheng, Q. Zhang, (2010) efficacy of grass for mitigating runoff and erosion from an artificial loessial earthen road. American Society of Agricultural and Biological Engineers Vol. 53(1): 119-125
[10] Morgan, R.P.C. (1986). Soil erosion and conservation. Longman Group Limited.
[11] Morgan. R.P.C and R.J.Rickson (1995). Slope stabilization and erosion control: a Bioengineering approach
[12] Morgan, R.P.C. (2007). Vegetative-based technologies for erosion control, The Use of Vegetation to Improve Slope Stability) 265–272.
[13] Moussouni, A., Mouzai L. and Bouhadef M. (2012). Laboratory experiments: Influence of rainfall characteristics on runoff and water erosion, Waset, 68. 1540-1543.
[14] Nearing, M.A.,Norton, L.D., Bulgako, D.A., Larionov, G.A., West, L.T., Dontsova, K.M., (1997). Hydraulics and erosion in eroding rills. Water Resources Research 33 (4), 865–876.
[15] Pan Chengzhong., ZhoupingShangguan. (2006). Runoff hydraulic characteristics and sediment generation in sloped grassplots under simulated rainfall conditions. Journal of Hydrology (331), 178– 185.
[16] Tollner, E.W. Barfield, BJ., and Hayes, JC., (1982). Sedimentology of erect vegetal filters. J. Hydr. Eng. Div-ASCE (108), 1518–1531.

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