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Open AccessFeature PaperArticle

Assessing the Impact of Man–Made Ponds on Soil Erosion and Sediment Transport in Limnological Basins

1
National Council for Scientific Research, Remote Sensing Center, Beirut 11-8281, Lebanon
2
Centre de Recherches en Sciences et Ingénierie, Lebanese University Faculty of Engineering II, Roumieh 1205, Lebanon
3
Centre d’Études et de Développement des Territoires et de l’Environnement, Université d’Orléans, 45100 Orléans, France
4
Faculty of Science and Technology, Free University of Bozen, Bolzano, 39100 Bozen, Bolzano, Italy
*
Author to whom correspondence should be addressed.
Water 2019, 11(12), 2526; https://doi.org/10.3390/w11122526
Received: 17 October 2019 / Revised: 26 November 2019 / Accepted: 27 November 2019 / Published: 29 November 2019
(This article belongs to the Special Issue Modeling of Soil Erosion and Sediment Transport)
The impact of ponds on basins has recently started to receive its well-deserved scientific attention. In this study, pond-induced impacts on soil erosion and sediment transport were investigated at the scale of the French Claise basin. In order to determine erosion and sediment transport patterns of the Claise, the Coordination of Information on the Environment (CORINE) erosion and Soil and Water Assessment Tool (SWAT) models were used. The impact of ponds on the studied processes was revealed by means of land cover change scenarios, using ponded versus pondless inputs. Results show that under current conditions (pond presence), 12.48% of the basin corresponds to no-erosion risk zones (attributed to the dense pond network), while 65.66% corresponds to low-erosion risk, 21.68% to moderate-erosion risk, and only 0.18% to high-erosion risk zones. The SWAT model revealed that ponded sub-basins correspond to low sediment yields areas, in contrast to the pondless sub-basins, which yield appreciably higher erosion rates. Under the alternative pondless scenario, erosion risks shifted to 1.12%, 0.52%, 76.8%, and 21.56% for no, low, moderate, and high-erosion risks, respectively, while the sediment transport pattern completely shifted to higher sediment yield zones. This approach solidifies ponds as powerful human-induced modifications to hydro/sedimentary processes.
Keywords: soil erosion; sediment transport; SWAT; CORINE erosion model; ponds; Brenne; limnology; land cover change soil erosion; sediment transport; SWAT; CORINE erosion model; ponds; Brenne; limnology; land cover change
MDPI and ACS Style

Al Sayah, M.J.; Nedjai, R.; Kaffas, K.; Abdallah, C.; Khouri, M. Assessing the Impact of Man–Made Ponds on Soil Erosion and Sediment Transport in Limnological Basins. Water 2019, 11, 2526.

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