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Extension de la base de données géographique " Charges critiques " pour la France métropolitaine : gestion, acquisition des données et cartographie. Phase 5 : Rapport intermédiaire

Abstract : Reduction of air pollutant emissions are negotiated under the Geneva convention on long-range transboundary air pollution. These international negotiations are based on the effects of atmospheric contaminants. To quantify the effects on the ecosystems, the critical loads concept is used. A critical load geographical database (or BDGCC) was created in 1997 to manage the environmental data (soil, parent material, hydrology, vegetation, ecosystems) needed to spatially model the critical loads over the French territory. Since then, the structure and the content of the BDGCC have been regularly updated and increased in order to take into account new applications (in particular geographic information system) and needs in model input parameters. With this tool, updated maps of critical loads have been regularly produced for different air pollutants. In this report, we are presenting the last works done around the BDGCC. A geographical database for the French vegetation has been achieved. Based on those data as well as on the geo-pedological map made previously, a new ecosystem map is currently under construction for France. Works are also going on the modelling of eutrophication by nitrogen with the preliminary developments of models which integrate the effects of nitrogen deposition on biodiversity. Some new results are also available for the modelling of metal critical loads. New data, needed to improve existing models, have been obtained.
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https://hal.inrae.fr/hal-02820589
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Submitted on : Saturday, June 6, 2020 - 6:16:18 PM
Last modification on : Tuesday, October 19, 2021 - 11:10:02 PM

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  • HAL Id : hal-02820589, version 1
  • PRODINRA : 264654

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Sophie Leguédois, Anne Probst. Extension de la base de données géographique " Charges critiques " pour la France métropolitaine : gestion, acquisition des données et cartographie. Phase 5 : Rapport intermédiaire. [Contrat] 2009. ⟨hal-02820589⟩

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