Ousmana, H. and El Hmaidi, A. and Essahlaoui, A. and Bekri, H. and El Ouali, A. (2017) Retraction: Modelling and mapping of water erosion risk by application of the GIS and PAP/RAC Guidelines in the watershed of Oued Zgane (Middle Atlas Morocco) Rétraction: Modélisation et cartographie du risque de l'érosion hydrique par l'application des SIG et des directives PAP/CAR. Cas du bassin versant de l'Oued Zgane (Moyen Atlas tabulaire, Maroc). Bulletin de l'Institut Scientifique, Section Sciences de la Terre (39). pp. 103-119.

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Abstract

The aim of this study was to map area vulnerable to water erosion based on the The Priority Actions Programme/Regional Activity Centre (PAP/RAC) method combined with Geographic Information Systems (GIS) of the Oued Zgane Watershed, this watershed sheltering Ifrah lakes and Iffer Afourgagh, is located in the north of the Middle Atlas, Morocco, in the tabular Middle Atlas (Middle Atlas causse). The predictive approach, the first step of the PAP / RAC method, provides a synthetic map of the distribution of erosive states, with 19.48 of the total area of the catchment area subject to a high and very high degree of erosion. The descriptive cartography of the various forms of erosion, the second step of PAP / RAC, shows that 84.7 of the basin area is known by the rigids, the superficial gullies and the sheet erosion. The superposition of the results of the predictive and descriptive approaches, 3rd phase of PAP / RAC, carried out the consolidated PAP / RAC map showing soil losses in the study area proportional to the increase of the main factors of water erosion. This consolidated erosion map indicates maximum soil losses in relation to moderately deep ravines located to the northeast of the watershed. The presence of these forms may be related to the steep slope, the aggressiveness of the rains and the lack of vegetation cover. © 2017 Universite Mohammed V, Institut Scientifique.

Item Type: Article
Subjects: Earth and Planetary Sciences
Divisions: SCIENTIFIC PRODUCTION > Earth and Planetary Sciences
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:46
URI: http://eprints.umi.ac.ma/id/eprint/2859

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