Highlights The Bafoussam-Dshang region in West Cameroon Highlands records numbers of landslides. The Analytical Hierarchical Process (AHP) delineate the landslide susceptibility. Geology, orography, hydrography and vegetation cover are landslide causative factors. Landslides susceptibility defines the Low, Moderate, High, and Very High classes. Landslides fall into the high to very high susceptibility zone at ∼ 87% in the BDR.
Abstract The main goal of this study is to produce a landslide susceptibility map of the Bafoussam-Dschang region (BDR) which is often subjected to landsliding by using Analytical Hierarchical Process (AHP). To achieve this objective, landslide triggering factors such as the lithology, slope, soil, land use, flow density, curvature, elevation and aspect have been combined with field observations. These Parameters were plotted on thematic layers using Geographical Information System (GIS) according to the AHP principles. Factors of weights were attributed based on the frequency of mass movements. The impact of one to another was assessed, allowing weights to be assigned to the different parameters. Subsequently, field observations revealed 100 mass movements including 97 landslides, 01 mudflow, 01 rock fall and 01 collapse within - the BDR. The field data including remote sensing techniques have subdivided the landslides susceptibility map into “Low (3%)”, “Moderate (10%)”, “High (21%)”, and “Very High (66%)” susceptibility zones respectively. The majority of these mass movements fall into the high to very high susceptibility zones equivalent to ∼ 87% of landslides. These results permit to identify the landslide susceptibility zones linked to the steep landscaping West Cameroon Highland (Cameroon Volcanic Line).
Landslide susceptibility zonation using the analytical hierarchy process (AHP) in the Bafoussam-Dschang region (West Cameroon)
Advances in Space Research ; 71 , 12 ; 5282-5301
2023-02-07
20 pages
Article (Journal)
Electronic Resource
English
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