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Modeling soil erosion and river sediment yield for an intermountain drainage basin of the Central Apennines, Italy

Auteur(s) et Affiliation(s)

BORRELLI, P.
Dept. of Earth Sciences, Physical Geography, Freie Univ., Berlin, Allemagne
Joint Research Centre, Inst. for Environment and Sustainability, Land Management and Natural Hazards Unit, Ispra, Italie
MÄRKER, M.
Dept. of Agronomy and Land Management, Univ., Florence, Italie
Heidelberg Academy of Sciences and Humanities, ROCEEH, Tübingen, Allemagne
PANAGOS, P.
Joint Research Centre, Inst. for Environment and Sustainability, Land Management and Natural Hazards Unit, Ispra, Italie
SCHÜTT, B.
Dept. of Earth Sciences, Physical Geography, Freie Univ., Berlin, Allemagne


Description :
The AA. focused on accelerated soil erosion processes in an Italian central Apennine intermountain watershed using modeling techniques implemented in a GIS environment. They proposed an integrated modeling approach applying a RUSLE model and a Turbidity Unit (TU) Index. The model outcomes were validated through measurements of lake sediment deposition. The findings indicate a potential high soil erosion risk. The validation of the model outcomes revealed that the TU Index model performed significantly better than the RUSLE model with regard to sediment yield prediction. Accordingly, the AA. found that even though rill and interrill processes reach very alarming values (RUSLE), they are not the dominant sediment source within the Turano watershed. Other geomorphological processes contributing to the watershed sediment yield – for instance, megarill, gully, bank and channel erosion and re-entrainment of landslide sediments – were very active in the study area.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2014, vol. 114, p. 45-58, nombre de pages : 14, Références bibliographiques : 1 p.

Date :
2014

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais
Droits :
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