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Mapping surface water erosion potential in the Soummam watershed in Northeast Algeria with RUSLE model

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Academic year: 2021

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Mapping surface water erosion potential in the Soummam watershed

in Northeast Algeria with RUSLE model

Authors

Youcef Sahli, Elhadj Mokhtari, Belkacem Merzouk, Benoit Laignel, Christophe Vial, Khodir Madani

Publication date 2019/7/1 Journal

Journal of Mountain Science Volume 16 Issue 7 Pages 1606-1615 Publisher Science Press Description

The present study aims to estimate the annual soil loss in the Soummam watershed in the northeast of Algeria, using the Revised Universal Soil Loss Equation (RUSLE), geographic information system (GIS), and remote sensing (RS). RUSLE model has been used for modelling the main factors involved in erosive phenomena. The Soummam watershed covers a surface area of 9108.45 km2 of irregular shape, northeast —southwest towards southeast. It

is characterized by an altitude varying between 2 m in the northeast and 2308 m in the northwest. Results showed that the average erosivity factor (R) is 70.64 (MJ·mm)/(ha·h·year) and the maximum value reaches 140 (MJ·mm)/(ha·h·year), the average soil erodibility factor (K) is 0.016 (t·h·ha)/(MJ·ha·mm) and maximum values reach 0.0204 (t·h·ha)/(MJ·ha·mm) in the southeast regions of the watershed, the average slope length and steepness factor (LS) is 9 …

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