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Modelling scenarios of agriculture changes on freshwater uses and water quality at a large watershed scale: the case of the Charente watershed (France)

hal.structure.identifierAménités et dynamiques des espaces ruraux [UR ADBX]
dc.contributor.authorVERNIER, Françoise
hal.structure.identifierAménités et dynamiques des espaces ruraux [UR ADBX]
dc.contributor.authorBORDENAVE, P.
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorCHAVENT, Marie
hal.structure.identifierAménités et dynamiques des espaces ruraux [UR ADBX]
dc.contributor.authorLECCIA, Odile
hal.structure.identifierAménités et dynamiques des espaces ruraux [UR ADBX]
dc.contributor.authorPETIT, Kévin
dc.date.accessioned2024-04-04T02:27:45Z
dc.date.available2024-04-04T02:27:45Z
dc.date.issued2010
dc.date.conference2010-07-05
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/190045
dc.description.abstractEnThe Charente River Basin (10 000 km2) is linked to the Pertuis Charentais Sea by a large tidal influence. The agriculture impacts strongly the quantity and the quality of freshwaters and influences the salinity and the quality of coastal waters needed by the oyster culture. In the context of 2 projects dealing with ICZM (EU Spicosa project, Respireau), we focused on the environmental assessment of spatialised scenarios of changes in agriculture. Different methods of clustering and data analysis were used to define a relevant typology of spatial units on the area. Combined with an analysis of agricultural practices based on surveys (irrigation, fertilizers and pesticides), the agricultural activities can be described in a simplified way, to be linked with an Extend model regarding the water quantity and an agro-hydrological one for the water quality side. Scenarios are built using surveys, expertise and discussion with stakeholders. Measures for agriculture changes are either considered in the agro-environmental programs or defined by stakeholders. Their effectiveness on the reduction of nutrients and pesticides fluxes is assessed when applied on the whole area or within sub-basins, depending on the farming system and vulnerability. Assessment was carried out using the spatially distributed model SWAT. The effectiveness of each scenario is considered in terms of relative reduction of nitrates, phosphorus, pesticides, suspended matter compared to the current situation.
dc.language.isoen
dc.source.titleInternational congress on environmental modelling and software
dc.subjectBASSIN VERSANT
dc.subjectQUALITE DE L'EAU
dc.subjectPRATIQUE AGRICOLE
dc.subjectPOLLUTION D'ORIGINE AGRICOLE
dc.subjectMODELISATION
dc.subjectRESSOURCES EN EAU
dc.subjectCHARENTE BASSIN VERSANT
dc.title.enModelling scenarios of agriculture changes on freshwater uses and water quality at a large watershed scale: the case of the Charente watershed (France)
dc.typeCommunication dans un congrès
dc.subject.halSciences de l'environnement
bordeaux.page9 p.
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.conference.titleInternational congress on environmental modelling and software
bordeaux.countryCA
bordeaux.title.proceedingInternational congress on environmental modelling and software
bordeaux.conference.cityOttawa
bordeaux.peerReviewedoui
hal.identifierhal-00546884
hal.version1
hal.invitednon
hal.proceedingsoui
hal.conference.end2010-07-08
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00546884v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=International%20congress%20on%20environmental%20modelling%20and%20software&rft.date=2010&rft.spage=9%20p.&rft.epage=9%20p.&rft.au=VERNIER,%20Fran%C3%A7oise&BORDENAVE,%20P.&CHAVENT,%20Marie&LECCIA,%20Odile&PETIT,%20K%C3%A9vin&rft.genre=unknown


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