Effect of Surface Slope on the Selectivity of Particles in Splash Erosion in Different Soils

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FOROUMADI MAJID; Vaezi Ali Reza

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Journal: APPLIED SOIL RESEARCH Year:2020 | Volume:8 | Issue:2 Page(s): 99-111

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Title

Effect of Surface Slope on the Selectivity of Particles in Splash Erosion in Different Soils

Author(s)

FOROUMADI MAJID | Vaezi Ali Reza | Issue Writer Certificate

Keywords

Aggregate breakdownQ1

Impact of raindropQ2

Particle soil distributionQ1

Rainfall simulatorQ1

Abstract

Splash erosion is the first type of water erosion caused by the impact of rain drops on the soil surface. Rain drops can disperse and move soil particles. Particles which transfer is effected by raindrop splash depends on several factors, including the soil type and the slope conditions. Although information on the role of these two agents splash erosion is available, but the selectivity of particles in splash erosion is a subject that needs further investigation, especially in the semi-arid region soils. This study was conducted to investigate the effects of splash erosion and selectivity of particles in different soils under the influence of slope. For this purpose, experiments were carried out in three different soils (Loam, Clay loam, Sandy clay loam) on four slopes (0, 10, 20 and 30%) under a simulated rain with constant intensity of 30 mm. h-1 in three replications, with a total of 36 units in the form of a completely randomized design. According to the results, the highest and the lowest amount of splash erosion were in the clay loam soil (105. 07 g. m-2. min-1) and the sandy clay loam soil (80. 28 g. m-2. min-1), respectively. With increasing the gradients, the intensity of splash erosion increased. In general, the selectivity of particles in the splash erosion was affected by the soil texture, the slope of the surface, and the interaction between of them. Silt was the most sensitive particle to splash, accounting for almost 57% of the splashed particles, and against the sand with almost 6% contribution to the splash was the most resistive particle. In all textures (except the loam texture), the selectivity of the silt particles at different levels of the gradient was greater than the rest. In the loam soil, clay particles were more selective than the silt particles, most likely due to the lower amount of clay particles in the original soil samples...

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APA: Copy

FOROUMADI, MAJID, & Vaezi, Ali Reza. (2020). Effect of Surface Slope on the Selectivity of Particles in Splash Erosion in Different Soils. APPLIED SOIL RESEARCH, 8(2 ), 99-111. SID. https://sid.ir/paper/390321/en

Vancouver: Copy

FOROUMADI MAJID, Vaezi Ali Reza. Effect of Surface Slope on the Selectivity of Particles in Splash Erosion in Different Soils. APPLIED SOIL RESEARCH[Internet]. 2020;8(2 ):99-111. Available from: https://sid.ir/paper/390321/en

IEEE: Copy

MAJID FOROUMADI, and Ali Reza Vaezi, “Effect of Surface Slope on the Selectivity of Particles in Splash Erosion in Different Soils,” APPLIED SOIL RESEARCH, vol. 8, no. 2 , pp. 99–111, 2020, [Online]. Available: https://sid.ir/paper/390321/en

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