Relation entre l'efficience des lacs collinaires et la sensibilité au ravinement de leur bassin versant en Tunisie centrale

Boughattas, Nour el Houda; Felfoul, Mennoubi Sfar; Boussema, Mohamed Rached; Snane, Mohamed Habib

doi:10.1051/lhb/2003108

Cited by 2 publications

(2 citation statements)

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“…This phenomenon is the result of two important reasons. First is a high vulnerability of sedimentary nature and origin of soil added to very high soil erosion and outcrops of sedimentary rocks (Sfar Felfoul et al, 1999, Roose et al, 1993, Bouchnak et al, 2009Boughattas et al, 2003. Second, is the rainfall regime characterized by stormy events after a long period of drought.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, this continuous version can simulate a long-term average annual runoff and sediment yield from watersheds (Connolly andal, 1997a, 1997b). This model is tested and calibrated in two watershed situated in centre west of Tunisia (Boughattas and al, 2003). The aim of this study is to investigate the replacement of the crop and rotation parameters types in the ANSWERS-2000 model with remote sensing data extracted from MODIS Images in order to explore the spatial and temporal evolution of canopy covers and their parameters.…”

Section: Introductionmentioning

confidence: 99%

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Contribution of MODIS image to hydrologic and erosion modeling

Boughattas¹,

Gammoudi²,

Abrougui³

et al. 2022

J. OASIS AGRIC. SUSTAIN. DEV

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Erosion is the most dangerous phenomenon of environmental and economic threat to arable land. By FAO. 35 % of Tunisian land are threatened by water erosion and varies regionally. Quantification and estimation of soil loss by water erosion is now essential to install the best management practices. In our study, we used a continuous physical based simulation version of a hydrological and water erosion model ANSWERS-2000. The aim of this study is to investigate the introduction of land use parameters extracted by MODIS image. This study is focused on El Azire watershed, is characterized by a moderate Mediterranean climate and a high spatial heterogeneity of soil and land use proprieties. Describing, monitoring, and predicting land-use and land-cover change in the watershed is a difficult process. However, the usefulness of MODIS image with their daily temporal resolution and spatial resolutions of 250 m and 500 m can make utilization of continuous physical-based models easier for great scale watersheds. A sensitivity analysis was conducted on each application such that the variability in erosion map output and can be assessed and incorporated into the interpretation of results with an acceptable level of confidence.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%