Identification of soil erosion sites in semiarid zones: Using GIS, remote sensing, and PAP/RAC model

Diani, Khadija; Ettazarini, Said; Hahou, Youssef; Belrhiti, Hicham El; Allaoui, Wafae; Mounir, Kaoutar; Gourfi, Abdelali

doi:10.1016/b978-0-12-821961-4.00003-8

Cited by 6 publications

(6 citation statements)

References 10 publications

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“…This entire area has been subjected to low-intensity regional metamorphism. Above these deposits to the north, we found the Paleozoic (Cambrian-Ordovician) lithological units, characterized by sandstone and schist facies, which are predominantly overlain by Mesozoic limestone carbonates (Jurassic and Cretaceous), as described by Diani et al [58]. The Toudgha River path is surrounded by Tertiary formations, mainly consisting of carbonates that are consolidated limestone and soft to poorly consolidated white-to-purplish sandstone.…”

Section: Study Areasupporting

confidence: 75%

“…It is bordered to the north by the Central High Atlas Mountains and to the south by the Anti-Atlas Mountains chain. The Toudgha River is the main tributary in The Toudgha river catchment is located in the western region of the large Ziz-Ghris basin, which is a tectonic depression formed during the Mesozoic era as described by Diani et al [58]. It is bordered to the north by the Central High Atlas Mountains and to the south by the Anti-Atlas Mountains chain.…”

Section: Study Areamentioning

confidence: 99%

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Integrating Erosion Potential Model (EPM) and PAP/RAC Guidelines for Water Erosion Mapping and Detection of Vulnerable Areas in the Toudgha River Watershed of the Central High Atlas, Morocco

Elbadaoui

Mansour

Ikirri

et al. 2023

Land

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This study aimed to evaluate the extent and severity of water erosion in the Toudgha river catchment in the Central High Atlas of Morocco using two different erosion models, the Erosion Potential Model (EPM) and the Priority Actions Programme/Regional Activity Centre (PAP/RAC) model. From the modeling results, the catchment was affected by varying degrees of erosion, ranging from “very slight” to “excessive”, with different locations identified under each model. The very high erosion areas were located in the extreme northwest of the catchment area for both of the applied models, covering 9.65% (according to PAP/RAC) and 8.56% (EPM) of the total area primarily driven by factors such as intense rainfall events, limited vegetation cover, high soil erodibility due to low organic matter content and coarser soil texture, and human activities such as overgrazing and land use changes, which exacerbate the effects of these natural factors on water erosion in these semi-arid areas. The study’s findings suggest that erosion is a significant concern in these environmental areas and provide valuable information for designing effective erosion control measures and guiding soil and environmental management practices. Both models effectively simulated the erosion phenomenon and provided useful tools for soil and environmental management. The EPM model can be used to design effective erosion control measures, while the PAP/RAC model can be used to develop a comprehensive strategy for the sustainable management of the catchment area. These results have implications for the implementation of effective erosion control measures in mountainous watersheds and highlight the need for further research in this area.

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Section: Study Areasupporting

confidence: 75%

Section: Study Areamentioning

confidence: 99%

Integrating Erosion Potential Model (EPM) and PAP/RAC Guidelines for Water Erosion Mapping and Detection of Vulnerable Areas in the Toudgha River Watershed of the Central High Atlas, Morocco

Elbadaoui

Mansour

Ikirri

et al. 2023

Land

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“…Previous studies have shown the importance of qualitative and holistic assessment methods for erosion prediction in risk mitigation measures in North African landscapes [32,33]. The qualitative method differs from the quantitative method in that it assigns weights to geographical units corresponding to soil erosion intensity [34]. The qualitative and quantitative models consider the same erosion factors, such as land use and land cover, soil type, slope gradient, and precipitation [35].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Erosion and Outflow Intensity in the Rif Region under Different Land Use and Land Cover Scenarios

Ouallali,

Kader,

Bammou

et al. 2024

Land

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The port of Tangier Med is essential due to its strategic location, as it is an important trading center linking Europe, North America, and Africa. However, the increased rates of downstream sediment transportation put pressure on the sustainable future of the port. Thus, assessing the existing erosion rates and future improvement scenarios is imperative for planning sustainable management at the catchment level. We utilize the Erosion Potential Model (EPM) combined with the Intensity of Erosion and Outflow (IntErO) algorithm to assess the erosion and outflow intensity and to distinguish the sediment-producing areas in the R’mel watershed. The port’s proximity at the bottom of the slope opposite the R’mel Dam is relevant in this context. Initial results show an average erosion rate of 13 t/ha/year. Quarry operations were identified as the primary sediment source, as indicated by the factors contributing to erosion. The qualitative PAP/RAC (Priority Actions Program/Regional Activity Center) model was used to assess the development trends in the watershed, confirming a clear tendency toward irreversible degradation in the quarry areas. Considering that the mined carbonate lithology represents 23.77% of the total area of the catchment, the situation in the region could deteriorate if quarry operations continue. The simulation of quarry rehabilitation scenarios through land use and land cover change (LULC) with IntErO shows that reforestation of quarries can significantly reduce erosion rates (4.78 t/ha/year) compared to their conversion to agricultural land. This study underlines the effectiveness of IntErO, based on the EPM model, in quickly and effectively mapping and quantifying water erosion.

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“…Our current understanding of erosion rates in semi‐arid to arid settings owing to overland flow and gully erosion is still limited, despite significant advances in recent years (Armoza‐Zvuloni et al, 2022; Diani et al, 2023; Mor‐Mussery & Laronne, 2020). One of the main challenges in evaluating erosion rates in these regions is the variability of the landscape and the complexity of the erosion processes (de la Torre‐Robles et al, 2023; García‐Ruiz et al, 2013; Gourfi et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Clay minerals in soils and sediment as tracers of provenance: The case study of the N'fis watershed, Morocco

Gourfi,

Daoudi,

Daoud

et al. 2023

Soil Use and Management

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Reservoir siltation remains a complex and challenging problem worldwide. Understanding the sources of sedimentation will be of great interest to preserving reservoir storage capacity as well as addressing land loss. This study selected the Takerkouste reservoir, at the outlet of the N'fis basin (High Atlas of Morocco). Four sediment cores and 30 soil samples were collected in the basin. Size distribution and mineralogy of soil and sediment samples were compared and used as tracers to identify the provenances of the sediments reaching the reservoirs from different tributaries. Results show that sediments in the Takerkouste reservoir are illite‐rich minerals with high crystallinity mainly originating from the erosion of schist formations situated in the northern part of the watershed. In parallel, mineralogy, illite crystallinity and chemistry indices of sediments in the reservoir indicate a change in sources because of the construction of a new dam upstream.

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Identification of soil erosion sites in semiarid zones: Using GIS, remote sensing, and PAP/RAC model

Cited by 6 publications

References 10 publications

Integrating Erosion Potential Model (EPM) and PAP/RAC Guidelines for Water Erosion Mapping and Detection of Vulnerable Areas in the Toudgha River Watershed of the Central High Atlas, Morocco

Integrating Erosion Potential Model (EPM) and PAP/RAC Guidelines for Water Erosion Mapping and Detection of Vulnerable Areas in the Toudgha River Watershed of the Central High Atlas, Morocco

Assessment of the Erosion and Outflow Intensity in the Rif Region under Different Land Use and Land Cover Scenarios

Clay minerals in soils and sediment as tracers of provenance: The case study of the N'fis watershed, Morocco

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