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            <gco:CharacterString>Les données sur le flux d'artificialisation des sols sont fournies à l'échelle des communes par le portail de l'artificialisation (https://artificialisation.biodiversitetousvivants.fr/les-donnees-au-1er-janvier-2019). La standardisation de ces données au maillage national de 10 km par 10 km de l’Inventaire National du Patrimoine Naturel (INPN, https://inpn.mnhn.fr/telechargement/cartes-et-information-geographique/ref/referentiels) s’est faite en deux étapes. Premièrement, nous avons calculé la proportion de chevauchement de chaque commune sur chaque maille du maillage national. Par exemple, une commune pouvait se répartir sur trois mailles avec un taux de chevauchement de 0.20, 0.70 et 0.10.  Deuxièmement, nous avons calculé une somme du flux d'artificialisation pondérée par le taux de chevauchement pour chaque maille. Par exemple, si une maille était recouverte par trois communes C1, C2, et C3 avec des taux de chevauchement de 0.70, 0.10 et 0.80, respectivement ; alors la maille obtenait comme valeur : 0.70 * valeurC1 + 0.10 * valeurC2 + 0.80 * valeurC3.  Cette approche est conservatrice puisque la valeur d’une maille tient compte de l’ensemble des valeurs des communes qui occupent cette maille.</gco:CharacterString>
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