Conservatory Management of Natural Resources in the Naâma Region (Southwest Algeria)

Boucherit, Hafidha; Benaradj, Abdelkrim; Bouderbala, Abdelkader

doi:10.1007/s41101-021-00118-9

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…The reported values of k, β and γ (Prosser and Rustomji, 2000), and the values estimated in both cover conditions were in good agreement. q s decreased signi cantly under stone cover condition as suggested by the attenuated exponents of both in ow and slope terms in equation [5].…”

Section: Manning Roughness and Froude Numbermentioning

confidence: 94%

“…Cover materials used for management consist of crop residues such as cereal straw (Meyer and Mannering, 1963., La en and Colvin, 1981), crushed stones (Meyer et al 1972), and gravel (Seginer et al 1962, Adams, 1966. Boucherit et al, 2021 reported that combining the mechanical methods like gabion structures (stone with wire mesh) and dry stone covers and biological covers like reforestation, planting, etc., can give the best result to conserve the natural resources. A laboratory study on hydraulics of interrill overland ow on stone-covered surfaces shows that sediment transport capacity is in fact greater than predicted by grain shear stress because energy dissipated in the wakes of roughness elements in overland ow is transformed into turbulence su ciently close to the bed to affect sediment transport (Abrahams and Parsons, 1994).…”

Section: Introductionmentioning

confidence: 99%

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Performance of stone covers on runoff and erosion in rainfed areas

Narsimlu,

Mishra

2024

Preprint

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The performance of stone cover on infiltration, runoff, erosion and sediment yield during overland flow were quantified using a hydraulic tilting flume under two different discharges with four different slopes (0.1, 1.0, 3.0, and 5%). Two surface conditions were tested: bare soil and partial stone-cover (50%) arranged in two strips. Stone cover reduced flow velocity, decreased outflow, increased infiltration and reduced soil erosion compared to bare soil. Stone cover was most effective at reducing discharge when the flow depth was less than the median particle diameter, but was effective at reducing sediment yield for both flow depths. Stone cover prevented rill erosion above 3% slope. Infiltration decreased with increasing slope due to lower ponding depths on steeper slope. Sediment concentration increased with an increase in slope even with stone cover. In the case of bare soil, sediment concentration showed an exponential increase with increase in slope. Stone cover was effective in increasing infiltration rate of overland flow by decreasing flow velocity, but only when flow depth was less than or equal to median particle diameter. By contrast, stone cover reduced erosion and sediment load at both flow depths. Models of infiltration rate and sediment transport capacity were calibrated with the observed data for use in other modeling applications.

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Section: Manning Roughness and Froude Numbermentioning

confidence: 94%