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PORTAIL D'INFORMATION GÉOGRAPHIQUE

Predicting runoff and sediment connectivity and soil erosion by water for different land use scenarios in the Spanish Pre-Pyrenees

Scales in soil erosion

Auteur(s) et Affiliation(s)

Dep. of Earth and Environmental Sciences, K. Univ., Geo-Inst., Heverlee, Belgique
POESEN, J.
Dep. of Earth and Environmental Sciences, K. Univ., Geo-Inst., Heverlee, Belgique
NAVAS, A.
Dep. of soil and Water, EEAD-CSIC, Zaragoza, Espagne
GASPAR, L.
Dep. of soil and Water, EEAD-CSIC, Zaragoza, Espagne
CERDÀ, A.
Soil Erosion and Degradation Research Group (SEDER), Dept. de Geografia, Univ., Valencia, Espagne
BRAZIER, R.
Geography, College of Life and Environmental Sciences, Univ., Exeter, Royaume-Uni
NEARING, M.
USDA-ARS Southwest Watershed Research Center, AZ, Tucson, Etats-Unis
DE VENTE, J.
Estación Experimental de Zonas Áridas, Consejo Sup. de Investigaciones Científicas (EEZA-CSIC), Desertification and Geoecology Dept., Almeria, Espagne


Description :
This study seeks to assess the effect of agricultural terraces, irrigation channels, trails, and land abandonment on the hydrological connectivity of a small catchment and its consequences on predicting rates of soil erosion under 4 different scenarios of land uses. The AA. tackle this goal by running a complex index of hydrological connectivity and a semi-physically based model of soil erosion with geographic information system (GIS) in the Estanque de Arriba catchment (Spanish Pre-Pyrenees) where 83 soil samples were collected. The different maps of hydrological connectivity were used to create runoff and sediment trap effectiveness masks that were included in the assessment of the effective cumulative runoff. The results showed that : connectivity is high in irrigation channels and agricultural terraces; vegetation factor is as important as the linear landscape elements; more erosion is predicted at the early stage of future land abandonment.


Type de document :
Article de monographie

Source :
Catena (Giessen), issn : 0341-8162, 2013, vol. 102, p. 62-73, nombre de pages : 12, Références bibliographiques : 49 ref.

Date :
2013

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

Langue :
Anglais
Droits :
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