Mapping of soil sensitivity to water erosion by RUSLE model: case of the Inaouene watershed (Northeast Morocco)
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ORIGINAL PAPER
Mapping of soil sensitivity to water erosion by RUSLE model: case of the Inaouene watershed (Northeast Morocco) Benzougagh Brahim 1 & Sarita Gajbhiye Meshram 2,3 Mimich Khalid 7 & Khaled Mohamed Khedher 8,9
&
Dridri Abdallah 4 & Boudad Larbi 5 & Sadkaoui Drisss 6 &
Received: 5 April 2020 / Accepted: 2 October 2020 # Saudi Society for Geosciences 2020
Abstract The sources of land degradation in many watersheds are runoff and erosion. In order to delay this degradation resulting in the loss of soil fertility, a system for its quantification needs to be established. Erosion severely impacts our natural capital and requires several studies and prevention and management steps. This research focuses on validating the revised universal soil loss equation (RUSLE) method through evidence from remote sensing (RS) and the Geographic Information System (GIS) in the watershed of the Inaouene river upstream of the Idriss 1st dam in the Taza region (northeast of Morocco). In this context, the approach adopted was performed, consists in combining the revised universal soil loss equation (RUSLE) to quantify erosion and GIS to spatialize the factors responsible for water erosion and soil loss (climate, soil, vegetation, and topography) GIS to produce a map of erosion risk. The results achieved show that the Inaouene watershed is characterized by an average climatic aggressiveness, a sparse vegetation cover without any safeguards, moderate to high erodible soils with a maximum ranging from 50 to 150 t/h/year. Topography characterized by high (50%) to moderately broken reliefs. The human intervention remains the most mattering factor in the embrittlement and the accentuation of the soils vulnerability for erosion for every dominant natural factor. The results of this study could be of use in prioritizing areas for soil conservation measures and watershed development and management. It is a tool for decision-makers, planners, and decision-makers in soil and water conservation decision-making to implement antierosion strategies to reduce the impact of erosion. Keywords Soil degradation . Water erosion . RUSLE model . Watershed . Inaouene River . GIS
Responsible Editor: Broder J. Merkel * Sarita Gajbhiye Meshram [email protected] 1
Department of Geology, Faculty of Sciences, BP11201, Zitoune, PC-50000, University Moulay Ismail, Meknes, Morocco
2
Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam
3
Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam
4
Faculty of Sciences Dhar El Mahraz, Department of Geology, Natural Resource Laboratory Environments and Sustainable Developments (RNE2D), Sidi Mohamed Ben Abdellah University, Fez City, Morocco
5
Faculty of Sciences, Department of Geology, University Mohammed V, Rabat City, Morocco
6
Department of Geology, Faculty of Sciences, University Abdelmalek Essaadi, Tetouan City, Morocco
7
Department of Geology, Faculty of Sciences, Water Sciences and
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