1. The STICS model to predict nitrate leaching following agricultural pratices
- Author
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Christian Revalier, Hocine Bourennane, Bernard Verbeque, Nathalie Schnebelen, A. Couturier, Emmanuel Ledoux, Ary Bruand, Bernard Nicoullaud, INRA - Unité Infosol, Institut National de la Recherche Agronomique (INRA), Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Unité de Science du Sol, Chambre d'Agriculture du Loiret, Institut des Sciences de la Terre d'Orléans (ISTO), Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Centre d'Informatique Géologique (CIG), ARMINES-MINES ParisTech - École nationale supérieure des mines de Paris, InfoSol (InfoSol), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)
- Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences ,upscaling ,decision support ,SDU:ENVI ,010504 meteorology & atmospheric sciences ,agricultural practices ,Nitrate leaching ,01 natural sciences ,chemistry.chemical_compound ,Nitrate ,Nitrate vulnerable zone ,Drainage ,Leaching (agriculture) ,[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment ,0105 earth and related environmental sciences ,[SDV.EE]Life Sciences [q-bio]/Ecology, environment ,2. Zero hunger ,Good agricultural practice ,business.industry ,crop model ,Environmental engineering ,STICS ,04 agricultural and veterinary sciences ,15. Life on land ,nitrate leaching ,6. Clean water ,chemistry ,Agriculture ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Environmental science ,business ,Agronomy and Crop Science - Abstract
International audience; The aim of this paper was to develop an upscaling approach for the soil-crop model STICS in order to predict the impact of agricultural practices on nitrate leaching on both plot and regional scales. A case study was carried out on a "Nitrate Vulnerable Zone" located in central France. The performance of the spatial approach was evaluated by accounting for all the spatial and temporal variability existing within the studied area. The results indicate that N leaching and nitrate concentration in drainage water were slightly underestimated; by 3 kg N*ha-1 (16%) and 8 mg NO3-*L-1 (11%), respectively. The STICS scaling approach was used to assess the effectiveness of "Good Agricultural Practice" established within the area over a seven-year period. The simulation results provided evidence that such a practice had reduced the nitrate concentration by about 30% (36 mg NO3-*L-1). However, the rate of nitrate leaching remains too large and further improvements to agricultural practices are required.
- Published
- 2004
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