Surface runoff and sediment yield response under the rainfall simulation condition controlled by soil variables of a semi-arid landscape

Raoof Mostafazadeh (), Hossein Talebi Khiavi, Abazar Esmali-Ouri and Mohammad Golshan
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Raoof Mostafazadeh: University of Mohaghegh Ardabili
Hossein Talebi Khiavi: University of Mohaghegh Ardabili
Abazar Esmali-Ouri: University of Mohaghegh Ardabili
Mohammad Golshan: Natural Resources and Watershed Management Office

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2023, vol. 25, issue 11, No 9, 12339-12356

Abstract: Abstract The study of soil erosion is one of the necessities of watershed management, and erosion control requires understanding the behavior of runoff and sediment production in different conditions. This study aims to evaluate the effect of soil particle percentage, soil organic carbon (OC) content, slope, and initial moisture on runoff components and the amount of sediment at the plot scale. In this study, a rainfall simulator has been used to generate rainfall in the Shamsabad area, Ardabil province, Iran, and was performed at 58 points through synthetic rainfall with 20-min duration. Also, soil samples were taken and their properties were determined through laboratory analysis. The GIS was used to produce slope layers and Topographic Wetness Index. The average percentage of soil OC was 0.90, and the average of clay, sand, and silt was 24.39%, 50.26%, and 24.35%, respectively. Taylor diagram and triple diagram models were used to determine the dependence of runoff and sediment behavior on independent variables. The average percentage of soil OC was 0.90, and the average of clay, sand, and silt was 24.39%, 50.26%, and 24.35%, respectively. The results showed that runoff termination time is directly related to soil clay content and inversely related to soil sand content; in other words, with increasing sand to more than 35%, runoff production time became longer. The amount of sediment or soil clay has shown a positive relationship with the percentage of sand, and the amount of slope is negatively related. By increasing the amount of soil clay to above 40%, the amount of sediment has reached its highest level in gentle slope values (

Keywords: Taylor diagram; Runoff initiation; Sediment concentration; Sediment yield; Soil texture (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s10668-022-02569-z

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