Prediction of factors affecting activation of soil erosion by mathematical modeling at pedon scale under laboratory conditions

Scientific Reports
Saeed ShojaeiJesús Rodrigo-Comino

Abstract

Soil degradation due to erosion is a significant worldwide problem at different spatial (from pedon to watershed) and temporal scales. All stages and factors in the erosion process must be detected and evaluated to reduce this environmental issue and protect existing fertile soils and natural ecosystems. Laboratory studies using rainfall simulators allow single factors and interactive effects to be investigated under controlled conditions during extreme rainfall events. In this study, three main factors (rainfall intensity, inclination, and rainfall duration) were assessed to obtain empirical data for modeling water erosion during single rainfall events. Each factor was divided into three levels (- 1, 0, + 1), which were applied in different combinations using a rainfall simulator on beds (6 × 1 m) filled with soil from a study plot located in the arid Sistan region, Iran. The rainfall duration levels tested were 3, 5, and 7 min, the rainfall intensity levels were 30, 60, and 90 mm/h, and the inclination levels were 5, 15, and 25%. The results showed that the highest rainfall intensity tested (90 mm/h) for the longest duration (7 min) caused the highest runoff (62 mm3/s) and soil loss (1580 g/m2/h). Based on the empirical resul...Continue Reading

References

Mar 23, 2013·Nature·David GriggsIan Noble
Oct 30, 2016·The Science of the Total Environment·Agata NovaraTommaso La Mantia
Jan 26, 2017·The Science of the Total Environment·Ali Reza VaeziArtemi Cerdà
Jan 11, 2019·Scientific Reports·Aldenor G SantosJailson B de Andrade
Aug 25, 2019·Journal of Environmental Management·Saeed ShojaeiSeyed Fakhreddin Afzali
Nov 18, 2019·The Science of the Total Environment·Ayele Almaw FentaYasunori Kurosaki
Jan 9, 2020·Scientific Reports·Ana RakitaAdelheid Elbe-Bürger

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