Dernière mise à jour le : 25 août 2011

Assessing impacts of alternative land use and agricultural practices on nitrate pollution at the catchment scale

DESCRIPTION

he SWAT model was used to model the impacts of climate, soils and agricultural practices on nitrate flows in a 1310 km2 catchment in western France. Spatialized data were used for natural features (climate, soil, topography), while agricultural activities, finely represented by crop sequences over 3 years, and their associated cultural practices were mapped by remote sensing. The model was calibrated and validated for discharge and nitrate flows at a gauging station. Results are analyzed with respect to leaching for each crop sequence and for each soil type, as nitrate leaching is highly sensitive to the soil and the crop sequence. The lowest risks were found in clayey soils and the highest in sandy soils and/or in sequences including maize

NOTICE BIBLIOGRAPHIQUE DETAILLÉE

keyboard_arrow_right Titre : Assessing impacts of alternative land use and agricultural practices on nitrate pollution at the catchment scale
keyboard_arrow_right Type de documentation : Articles
keyboard_arrow_right Auteur(s) personne(s) : Ruelland, Denis , Laurent, François
keyboard_arrow_right Date de publication : 25 août 2011
keyboard_arrow_right Editeur(s) : Elsevier
keyboard_arrow_right Tags thématiques : agriculture, nitrate, sol
keyboard_arrow_right Langue : Anglais
keyboard_arrow_right Collection : Journal of Hydrology

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