Temporal Variation Pattern of Runoff and Surface Sediment and Piping Erosion in Silt Loam Soil under Different Slopes Using Artificial Rain Simulator

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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:

Studying the process of soil erosion and evaluating its effective factors is one of the most important prerequisites for proper management of soil and water resources. This study was conducted to investigate the production of surface and pipe runoff and sediment using artificial rainfall on silt loam soil in the laboratory. So, the soil was collected from the study area and transported to the laboratory. Laboratory experiments were performed on a soil bed in a rectangular flume with three pipes, at slopes of 2%, 6%, 10%, 14%, and 18% under simulated rain (30 mm/h) for one hour. Related graphs were drawn in Excel to analyze the results, and Spearman's correlation test was used in SPSS software to check the correlation between runoff and sediment values in each slope. The results showed that with the increase in slope, the sum of surface and pipe runoff and sediment increased over time. For example, in a slope of 2%, the runoff and sediment in the initial moments of the experiment increased from 0 to 1.3 liters and 26.2 g m-2 at the end of the experiment. Also, the correlation coefficient between runoff and sediment in the slopes was 0.98, 0.62, 0.4, 0.93, and 0.15, respectively, which was significant in some, but in others, it was not significant because of soil loss.

Language:
Persian
Published:
Journal of Hydrology and Soil Science, Volume:28 Issue: 2, 2024
Pages:
17 to 30
https://www.magiran.com/p2760853  
سامانه نویسندگان
  • Mehdi Pazhouhesh
    Corresponding Author (2)
    Associate Professor Natural Engineering, Shahrekord University, Shahr-e-Kord, Iran
    Pazhouhesh، Mehdi
  • Khodayar Abdollahi
    Author (4)
    Assistant Professor Natural Engineering, Shahrekord University, Shahr-e-Kord, Iran
    Abdollahi، Khodayar
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