par Rousseau, Véronique 
;De Becker, Eliane ;Billen, Gilles
Référence Water Supply, 6, 3, page (287-294)
Publication Publié, 1988
;De Becker, Eliane ;Billen, Gilles Référence Water Supply, 6, 3, page (287-294)
Publication Publié, 1988
Article révisé par les pairs
| Résumé : | An approach for determining the relative contribution of agricultural, domestic and industrial activities in nitrogen contamination of surface- and groundwater consists in making up a budget of N - transfers at the scale of a watershed. Such a budget has been established at the scale of the Dyle basin above Wavre (Belgium). This budget is organized around three main N - stocks: - Nitrogen soil submitted to fertilizers inputs, to uptake by crop and to microbiological transformations which together influence nitrogen transfer towards surface- and groundwater. - Nitrogen river system arising from soil drainage and groundwater input, which is partly eliminated by denitrification occurring mostly in river sediments. - Nitrogen groundwater resulting from soil leaching and domestic effluents infiltration from cesspools or septic tanks. A budget of all these processes at the scale of the Dyle basin allows to estimate the relative contributions of soil leaching and domestic sewage infiltration through cesspools to nitrogen contamination of the Bruxellian aquifer. |
