(Article of periodic en Anglais - 2009)

Document title

Changing dynamics due to natural reforestation in the Dragonja catchment, SW Slovenia

Authors(s) and Affiliation(s)

(1) Land Degradation and Development Group, Univ., Wageningen, PAYS-BAS
(2) Dep. of Environmental Geo-Sciences, Vrije Univ., Amsterdam, PAYS-BAS
(3) Physical and Regional Geography Research Group, Katholieke Univ., Leuven, BELGIQUE


With the spatially distributed erosion and sediment delivery model WATEM/SEDEM, the hillslope sediment delivery to the river channel was calculated on the basis of parameters (soil and precipitation parameters, a DEM and land use) measured in the field and laboratory in 2002 and land use maps based on aerial photographs from 1954 to 1975, 1985 and 1994. For 2 independent calibrations WATEM/SEDEM modelled a sharp decline of 69% in total hillslope sediment delivery from 1954 to 2002. As the sub-catchments Rokawa and Upper Dragonja did not reforest in the same way, the sediment yield response is different as well. The sources of fine sediment were determined by analysing the hysteresis of the discharge waves, and the suspended sediment texture. The sediment that leaves the catchment originates from 3 sources : hillslopes, erosional bedrock banks and sedimentary riverbanks. The analysis of the suspended sediment texture suggests that during a discharge wave the suspended sediment originates predominantly from the hillslopes. The sedimentary riverbanks are not an important source of suspended sediment


Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2009, vol. 78, no1 [pp. 60-71]

Bibliographic references : 1 p.

Collation : 10 fig., 3 tabl.



INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2009.02.021

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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