Reference : Projet QualVados : Evaluation des mesures prises pour réduire les incidences de la pollu...
Reports : External report
Life sciences : Agriculture & agronomy
Life sciences : Environmental sciences & ecology
http://hdl.handle.net/2268/62494
Projet QualVados : Evaluation des mesures prises pour réduire les incidences de la pollution diffuse d’origine agricole et domestique sur la qualité des masses d’eau de surface et souterraines de la Région wallonne à l’aide du modèle EPICgrid
French
Sohier, Catherine mailto [Université de Liège - ULg > Sciences et technologie de l'environnement > Hydrologie et hydraulique agricole >]
Dautrebande, Sylvia [ULg > Gembloux Agro-Bio Tech > Hydrologie et Hydraulique agricole > >]
Degre, Aurore mailto [Université de Liège - ULg > Sciences et technologie de l'environnement > Hydrologie et hydraulique agricole >]
2008
SPW SPGE
145 p + annexes
Namur
Belgique
[en] nitrate ; hydrologic modelling ; agricultural practices ; PGDA ; mitigation ; vadose zone
[en] Wallonia (Southern Region of Belgium) implemented the Nitrates Directive through a first actions plan in 2002 followed by a second action plan in 2007. It designated vulnerable zones and introduced various mandatory practices in order to reduce the nitrate contamination risk. .
In Wallonia, nitrate-related problems are obvious in several groundwater bodies and their trends over the past 30 years are worrying. The main part of the contamination level is due to agricultural diffuse pollution. Nevertheless, some pollution peaks are observed mainly coming from domestic sewage.
In order to assess the global effectiveness of all the mitigation practices, we have been developing a hydrological model spatially distributed using a 1km² grid cell on the whole Region (16 900 km²). The EPICgrid model represents the root zone and the vadose zone. In Wallonia, groundwater tables are more than 30 m deep in 8% of the territory. It is therefore of major importance to fill the gap between the root zone and the groundwater bodies. It allows us to assess the nitrate transfer time and forecast the mitigation measures’ effect in time, space and amplitude. On the ground, runoff and sediment yield are modelled at the small watershed scale.
This report presents an complete analysis of the mitigation measures implemented in Wallonia and their effects forecasted until 2015.
SPW - SPGE
Service public de Wallonie et SPGE
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/2268/62494

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Qualvados Rapport Final.pdfPublisher postprint4.42 MBRequest copy
Restricted access
Qualvados Rapport Final_Annexes.pdfPublisher postprint6.65 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.