Assessment of Soil Erosion with RUSLE 3D and USPED in the Nekor Watershed (Northern Morocco)

Arrebei, Nassima; Sabir, Mohamed; Naïmi, Mustapha; Chikhaoui, Mohamed; Raclot, Damien

doi:10.4236/ojss.2020.1012031

Cited by 14 publications

(10 citation statements)

References 16 publications

(13 reference statements)

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“…Previous work on the same watershed using the RUSLE method revealed that the annual soil loss is more than 30.1 t•ha −1 •yr −1 [38]. Regarding other watersheds in the Rif region: the annual soil loss in the Nekor watershed using the RUSLE model is more than 37.2 t•ha −1 •yr −1 [38], according to the RUSLE 3D model it is 60.77 t•ha −1 •yr −1 [11], and the USPED model puts it at 65.86 t•ha −1 •yr −1 [16]. The annual soil loss in the Makhazen watershed using the USLE model is 735 t•ha −1 •yr −1 [17].…”

Section: Resultsmentioning

confidence: 97%

“…The estimation of soil loss was quantified using the USLE model Equation (1) proposed by Wischmeier and Smith [16], and it is applied globally [11,17,[21][22][23][24][25][26][27][28] by employing five parameters using several data sources and integrating GIS:…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, this study can provide information on annual soil loss and hot spot areas in the watershed and its location of the Ghiss dam to take the necessary interventions [13]. In Morocco, many researchers have studied the vulnerability of watershed erosion using the USLE empirical model [11,13,[16][17][18], their results of soil loss estimation varying from one basin to another. This difference is due to variations in the physical characteristics of each basin [18].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Estimation of Soil Erosion Rate Hot Spots by Integrated USLE and GIS Methods: a Case Study of the Ghiss Dam and Basin in Northeastern Morocco

Taher

Mourabit

Bourjila

et al. 2022

GaEE

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Soil erosion is a major factor leading to dams’ siltation and reducing their storage capacity. This study mapped the hot spots of soil erosion areas to predict the soil erosion/siltation in the Ghiss basin/dam (northeastern Morocco). In this context, various data has been prepared in the geographical information system for the estimation of soil erosion by integrating the universal soil loss equation (USLE). The result of this study revealed that soil loss rate ranges between0 and 19 t∙ha−1∙yr−1. Therefore, the hot spots in the soil erosion area are to be found upstream, potentially leading to dam siltation over time. To avoid Ghiss dam siltation, we suggest terrace farming and reforestation in the soil erosion area hot spots.

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Section: Resultsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Estimation of Soil Erosion Rate Hot Spots by Integrated USLE and GIS Methods: a Case Study of the Ghiss Dam and Basin in Northeastern Morocco

Taher

Mourabit

Bourjila

et al. 2022

GaEE

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“…The average annual precipitation ranges from 286.4 mm to 311.5 mm among the different stations contained in the basin, but the average interannual rainfall of the basin is estimated to be 340 mm [18], the main river length is estimated to be 70 km. The overall slope index is 20.7 m km -1 throughout the watershed [19], on the left bank, this index is higher than on the right bank [20]. The average slope in the plain is about 0.75% and in the riverbed is 2.3%.…”

Section: Study Areamentioning

confidence: 99%

GIS preprocessing for rainfall-runoff modeling using HEC-HMS in Nekkor watershed (Al-Hoceima, Northern Morocco)

et al. 2023

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All Discharge data are among the most critical factors that must be considered when evaluating the management of water resources in a watershed. Simulation of rainfall-runoff is therefore an important element in assessing the impacts of serious flooding. In the present study, rainfall-runoff in the Nekkor watershed in Al Hoceima province was simulated using GIS, remote sensing and the Hydrologic Engineering Center Hydrologic Modeling System (HEC-HMS) model. The applicability, capacity and suitability of this model for rainfall runoff in the watershed were examined. The watershed parameters were generated using (HEC-GeoHMS) and ArcGIS. The model was calibrated using a daily data set that occurred in the watershed between 2003 and 2007, the validation period was from 2009 to 2012. Model performance was evaluated using a variety of different statistical indices to study the response and impact of rainfall-runoff. Model parameters were changed and calibration was performed using the Soil Conservation Service Curve Number loss method. Consistent and satisfactory performance in terms of peak discharge, total flood volume, timing of peak discharge and overall hydrograph adjustment effect was found. The determination coefficient (R2) for the validation period reached 0.73 versus 0.71 for the calibration period. The root mean square error (RMSE) is within the acceptable range. The relative bias (RE) demonstrates an overestimation in the calibration period and an underestimation in the validation period in the peak flows. These results will help decision makers to better manage water resources in this watershed and mitigate flood risks.

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“…The study area has been the subject of several studies on morphogenesis and water erosion over the last decades (Sabir et al, 2004;Tribak, 2020;Zaher et al, 2021;Arrebei et al, 2020;El Mazi et al, 2021). These studies showed that the deforestation and the successive tillage led to profound changes in soil properties affect directly the soil functional processes.…”

Section: Introductionmentioning

confidence: 99%

Deforestation effects on soil properties and erosion: a case study in the central Rif, Morocco

MAZİ

HMAMOUCHİ

Saber

et al. 2022

EJSS

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In the Central Rif in the north of Morocco, forest ecosystems have suffered a very sharp decline in favor of crops. Deforestation followed by cultivation illustrates the important environmental, economic and social roles of forests. The objective of this work is to assess the impact of deforestation on soil properties and erosion in the southern Central Rif. The loss of fertility of cleared soils was assessed using physico-chemical analyses after 2, 8 and 20 years of cultivation. A manual rainfall simulation was used to assess the impact of cultivation on the hydrodynamic behavior of the soil. The results show that the conversion of forests into agricultural areas has multiple consequences on the natural system. The general trend of soil texture elements after cultivation shows a significant increase in sand content, and a decrease in clay and silt content. Soil erodibility measured by USLE-K factor increased 3.5 times in the cultivated soil for 20 yrs. compared to the forest soil. Subsequent tillage of cultivated land increases bulk density and fragments large aggregates into smaller ones. Cultivation for 8 and 20 yr decreased SOM by 41 and 82% respectively. Total Nitrogen decreased by 45%, acidity increased by 0.8 unit after 20 years of cultivation. Conversion of natural forest to agricultural land significantly increases soil erosion. The erosion rate becomes higher in the cultivated the 8 and 20 yr cultivation, with an average of 219.60 ± 19.3 and 989.17 ± 68.4 g m-2 h-1 respectively. This degradation hinders agricultural productivity, leading farmers to abandon the land and seek new plots at the expense of forests to meet their agricultural land needs.

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Assessment of Soil Erosion with RUSLE 3D and USPED in the Nekor Watershed (Northern Morocco)

Cited by 14 publications

References 16 publications

An Estimation of Soil Erosion Rate Hot Spots by Integrated USLE and GIS Methods: a Case Study of the Ghiss Dam and Basin in Northeastern Morocco

An Estimation of Soil Erosion Rate Hot Spots by Integrated USLE and GIS Methods: a Case Study of the Ghiss Dam and Basin in Northeastern Morocco

GIS preprocessing for rainfall-runoff modeling using HEC-HMS in Nekkor watershed (Al-Hoceima, Northern Morocco)

Deforestation effects on soil properties and erosion: a case study in the central Rif, Morocco

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