Modélisation de l'érosion hydrique et des facteurs causaux, Cas de l'oued Sahla, Rif Central, Maroc

Mesrar, Haytam; Sadiki, Abdelhamid; Izquierdo, Ana Navas; Faleh, Ali; Quijano, Laura; Chaaouan, Jamal

doi:10.1127/zfg/2015/0169

Cited by 12 publications

(5 citation statements)

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“…It is a major constraint to sustainable development and promotion of rural activities. This phenomenon affects aggressively many areas in Morocco, especially the Rif area where water and soil resources are seriously threatened (Heusch1970; Sadiki et al, 2012;Mesrar et al, 2015). At the level of the Sahla watershed, the potential risk study of erosion shows that more than 15% present high to extreme erosion level, localised especially in agricultural fields, where losses recorded as 190 t ha -1 y -1 (Mesrar, 2016).…”

Section: Introductionmentioning

confidence: 99%

Vertical and lateral distribution of fallout 137 Cs and soil properties along representative toposequences of central Rif, Morocco

Mesrar

Sadiki

Faleh³

et al. 2017

Journal of Environmental Radioactivity

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The purpose of this study is to understand and quantify the relationships between current Cs inventories and the soil properties and the physiographic characteristics. A total of 36 cores were taken in seven transects with different slopes, lithology and land use. The analysis focused on theCs mass activity as well as inventories and its relationship with soil properties as grain size and organic matter. The mass activity of Cs and the inventories varied between 3.6 and 63.7 Bq kg and between 521.7 and 3304.4 Bq m, respectively. At uncultivated soils, high concentrations of Cs are located in the top 10 cm and decreased exponentially in depth. Cultivated soils record disturbed and heterogeneousCs profiles with values of mass activity and inventories up to 38.7 Bq kg and 2510.8 Bq m, respectively. The Cs inventories were significantly higher in uncultivated soils (mean: 2086.9 Bq m) compared to cultivated soils (mean: 1397.1 Bq m). The Cs mass activity showed a significant positive correlation with organic matter, silt and clay, but it was negatively correlated with sand and pH respectively. High levels ofCs were found at altitudes between 500 m and 640 m a.s.l, and at slopes from 8° to 11°, as well as in dense scrub land and Fersialitic soils. A principal component analysis showed that more than 86.7% of the variance in Cs mass activity was explained by the organic matter content and the land use. The results of this study provide insights into the effects of soil properties and physiographic factors on the behaviour ofCs in soils of Mediterranean environments of North Africa and strengthen the reliability of this radioisotope as an erosion tracer.

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Section: Introductionmentioning

confidence: 99%

Vertical and lateral distribution of fallout 137 Cs and soil properties along representative toposequences of central Rif, Morocco

Mesrar

Sadiki

Faleh³

et al. 2017

Journal of Environmental Radioactivity

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“…The PAP/RAC model is designed to predict soil loss by integrating factors influencing water erosion, such as topography, river system, soil type, lithological material, and land cover types (reflecting farming systems) (Ousmana et al 2017;Chikh et al 2019;Tahouri et al 2022). This model has been successfully employed in various Mediterranean countries and has demonstrated its effectiveness in numerous scientific studies (Hassan et al 2013;Faleh and Maktite 2014;Mesrar et al 2015;Hili et al 2017;). Hence, it was decided to apply the PAP/RAC model to identify the land potentially exposed to erosion problems in the upstream watershed of the Tassaoute located in the central High Atlas.…”

Section: Methodsmentioning

confidence: 99%

“…Selection of an appropriate approach to soil erosion evaluation is critical, the PAP/RCA model is chosen due to its adaptability for the management of Mediterranean coastal areas, its low requirement for direct measurement data (slope, hydrographic network, soil type, lithological material, and type of vegetation cover), and its satisfactory results. Previous studies conducted in various countries: Morroco (Faleh and Maktite 2014;Mesrar et al 2015;Boukrim et al 2016;Elaloui et al 2017;Hili et al 2017;LakHili et al 2017;Ousmana et al 2017;Ait Yacine et al 2019;Labbaci et al 2020;Tahouri et al 2022), Tunisia (Ben Rhouma et al 2018Chokri 2020) and Algiers (Khallef et al 2020b) encourage the use of this model. The second reason is that the water erosion problem in this watershed was studied by applying other models (Elaloui et al 2017;Barakat et al 2022), but the PAP/RAC model has not been used for this watershed.…”

Section: Introductionmentioning

confidence: 94%

Modelling and mapping of soil erosion risk based on GIS and PAP/RAC guidelines in the watershed of Tassaoute (Central High-Atlas, Morocco)

Ziadi¹,

Barakat

Aloui³

et al. 2023

BOGPGS

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Morocco watersheds, which provided many ecosystem services necessary for the socio-economic life of rural communities, are experiencing significant change and environmental problems. Therefore, examining potential soil erosion considered a major problem in the Moroccan highlands is very important to prioritize high erosion severity areas. Keeping in view of the above aspects, the present study aimed to evaluate and map areas at risk of water erosion in the upstream Tassaoute watershed (central High Atlas, Morocco), using the Priority Action Program/Regional Activity Center (PAP/RAC) method associated with Geographic Information Systems (GIS) and remote sensing. The PAP/RAC approach consisted of integrating the natural factors that influence water erosion, namely slope, lithology, vegetation cover and land use. This method provided an accurate cartographic product that reflects the reality of the state of soil degradation and the qualitative assessment of erosion. The generated erosion risk map of the study area showed that the phenomenon of erosion threatens this basin, especially in the middle and downstream, such that 40% of the basin surface has significant erosion and the high and very high degree of erosion represented 27% of the total surface of the study area. These results therefore demonstrated the PAP/CAR model reliability in assessing and mapping of water erosion risks in the upstream Tassaoute basin.

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“…This approach is preferred for its ease of use. Preliminary results have already made it possible to superimpose and analyze several factors, such as slope, nature of materials, and vegetation cover (Mesrar et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Contribution of Geomatics, Priority Activity Program Guidelines, and Remote Sensing to Environmental Study in the Cretaceous Basin of Errachidia-Boudenib, Morocco

Mehdaoui¹,

Mili²,

Ousmana³

et al. 2023

Ecol. Eng. Environ. Technol.

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The present study aims at mapping areas vulnerable to water erosion based on the Priority Activity Program/ Regional Activity Center (PAP/CAR) model guidelines, geomatics, remote sensing, and GIS in the Errachidia-Boudenib Cretaceous basin. This basin is located in south-eastern Morocco and covers an area of 13 000 km 2 , the basin is 320 km long and 75 km wide. The method of estimating water erosion is composed of three phases; a predictive phase consisting of a mapping of predisposing factors such as slope, substrate, and/or soils and vegetation cover, a descriptive phase based on the mapping of actual erosion, and an integration phase to arrive at the identification and evaluation of the erosion risk. The mapping of areas vulnerable to water erosion indicates that 70% of the studied basin has low erodibility and 22% is notable, while only 8% has high to very high erodibility. The areas most affected by degradation are located at the end of the basin and correspond to lands with steep slopes (>35%). Consequently, this study has allowed us to locate certain sectors and roads that may be affected by this type of erosion, namely the mountainous areas of the High Atlas and roads numbered R13, R601, R 703, and P7106.

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Modélisation de l'érosion hydrique et des facteurs causaux, Cas de l'oued Sahla, Rif Central, Maroc

Cited by 12 publications

References 0 publications

Vertical and lateral distribution of fallout 137 Cs and soil properties along representative toposequences of central Rif, Morocco

Vertical and lateral distribution of fallout 137 Cs and soil properties along representative toposequences of central Rif, Morocco

Modelling and mapping of soil erosion risk based on GIS and PAP/RAC guidelines in the watershed of Tassaoute (Central High-Atlas, Morocco)

Contribution of Geomatics, Priority Activity Program Guidelines, and Remote Sensing to Environmental Study in the Cretaceous Basin of Errachidia-Boudenib, Morocco

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