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Méthode de spatialisation des activités agricoles en appui à la mise en oeuvre de la Directive Cadre sur l'Eau. Application au calcul d'un indicateur pesticide par zone hydrographique du bassin Adour-Garonne

Abstract : The territorial limits resulting from the environmental zonings established to support the implementation of the Water Framework Directive are by construction independent of the French administrative geographical area (région, canton, commune). However, the data necessary to study these territories are not directly available in national databases since the results from national surveys (SCEES) are systematically reported on administrative scales. Thus, such administrative zonings are not relevant to describe the characteristics of the different hydrographic units and to propose programs of measures suited to the existent agricultural activities. The current study suggests a method to free oneself from the limits bound to incompatible spatial zonings and to move from a scale to an other one by downscaling / upscaling operations. The solution proposed combines methods of spatialisation of agricultural activities with a control variable: land use stemming from Corine Land Cover database. A preliminary condition for using Corine Land Cover is to define a correspondence table between the variables of the General Agricultural Census (R.G.A) and those of Corine Land Cover. Finally, this method has allowed to reconstitute from the RGA database, at the scale of the commune, an agricultural database in the river basin district. Applied to the river basin district of Adour-Garonne, this method has permitted to calculate a pesticide indicator of phytosanitary pressure (total number of phytosanitary treatements applied by hectare) by hydrographic unit. These results are compared to the zonings previously established by the Adour Garonne Water Agency from the same indicator calculated at the scale of the canton.
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https://hal.inrae.fr/hal-02587843
Contributor : Migration Irstea Publications <>
Submitted on : Friday, May 15, 2020 - 12:19:29 PM
Last modification on : Tuesday, August 18, 2020 - 4:00:06 PM

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  • HAL Id : hal-02587843, version 1
  • IRSTEA : PUB00019648

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Françoise Vernier, Frédéric Zahm, Guilhem Bousquet, Kévin Petit. Méthode de spatialisation des activités agricoles en appui à la mise en oeuvre de la Directive Cadre sur l'Eau. Application au calcul d'un indicateur pesticide par zone hydrographique du bassin Adour-Garonne. irstea. 2006, pp.78. ⟨hal-02587843⟩

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