Estimating Soil Erosion and Sediment Yield Using GIS in the Central Pre-Rif (Northern Morocco) – The Case of the Oued Lebene Watershed

• Autorzy: El Amarty Fahed , Lahrach Abderrahim , Benaabidate Lahcen , Chakir Afaf

Identyfikatory

DOI

10.12912/27197050/187977

• Języki publikacji: EN

Abstrakty

EN

The alarming degradation of soils, particularly in the Moroccan Rif region, is the result of various forms of water erosion processes, leading to significant environmental and economic damage in the area. The Oued Lebene watershed is a sub-basin of the Sebou River, located in the central part of the Pre-Rif. Using GIS, remote sensing, and the universal soil loss Equation modified for North African conditions and validated by field observations, this study aimed to measure soil losses, sediment delivery capacity, and sediment yield rates. The estimation of soil loss reveals that the watershed is exposed to a high degree of erosion, reflected by an estimated total annual loss of 6 379 314 t/yr, with an average annual rate of 46.17 t/ha/yr. The severe erosion class covers 52.25% of the study area, contributing to 90.67% of sediment production with an average of 80.11 t/ha/yr-1. The erosion class below the tolerance threshold according to Wischmeier represents 48 108 hectares, or 34.82% of the total watershed area. Analysis of the synthetic sediment delivery ratio (SDR) map shows that the sediment delivery capacity is approximately 0.17, and the sediment yield (SY) in the Oued Lebene watershed is estimated at 770 440.32 t/yr. This is the outcome of the interaction between multiple causative factors, including steep slopes, friable substrates, severely degraded vegetation cover, etc., which increasingly accelerate the degradation of water resources in the downstream Oued Sebou, a source of irrigation for agricultural lands.

Słowa kluczowe

EN

erosion; sediment yield; sediment delivery ratio; universal soil loss equation modified; Oued Lebene watershed; Moroccan Rif region

• Wydawca: Lubelski Oddział Polskiego Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology ; WNGB Wydawnictwo Naukowe
• Czasopismo: Ecological Engineering & Environmental Technology
• Rocznik: 2024
• Tom: Vol. 25, iss. 8
• Strony: 1--16
• Opis fizyczny: Bibliogr. 65 poz., rys., tab.

Twórcy

autor

El Amarty Fahed

• Functional Ecology and Environmental Engineering Laboratory (LEFGE), FST-Fes, Sidi Mohammed Ben Abdellah University, Immouzer Road, BP: 2202, Fez 30000, Morocco

• https://orcid.org/0009-0000-0580-7864

autor

Lahrach Abderrahim

• Functional Ecology and Environmental Engineering Laboratory (LEFGE), FST-Fes, Sidi Mohammed Ben Abdellah University, Immouzer Road, BP: 2202, Fez 30000, Morocco

autor

Benaabidate Lahcen

• Functional Ecology and Environmental Engineering Laboratory (LEFGE), FST-Fes, Sidi Mohammed Ben Abdellah University, Immouzer Road, BP: 2202, Fez 30000, Morocco

autor

Chakir Afaf

• Laboratory of Innovative Materials and Mechanical Manufacturing Processes (IMMM), ENSAM-Meknes, Moulay Ismail University, Marjane 2, BP: 15290 Meknes 50500, Morocco

• https://orcid.org/0009-0007-1061-2616

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