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 "description": "Cette couche de donnée représente les forêts actuelles auxquelles ont été attribuées leur ancienneté. \n\nL\u2019ancienneté de l\u2019état boisé d\u2019une parcelle forestière actuelle est un paramètre crucial à prendre en compte dans la gestion durable de ce patrimoine.  \n\nPar convention, en Wallonie, les forêts anciennes sont des surfaces restées à l\u2019état forestier depuis la carte de Ferraris (18e siècle).\n\nL\u2019ancienneté de l\u2019état boisé d\u2019une parcelle forestière actuelle est décrite selon deux paramètres : d\u2019une part, la continuité de l\u2019état boisé au cours des 250 dernières années (champ ANCIENNETE: boisement récent ou forêt ancienne), et d\u2019autre part, la composition du peuplement (champ CLASS_DESC) :\n\n1) forêt ancienne subnaturelle : forêt ancienne restée feuillue sans interruption depuis le 18ème siècle.  \n\n2) forêt ancienne subnaturelle : forêt ancienne restée feuillue sans interruption depuis le 18ème siècle.  \n\n3) forêt ancienne subnaturelle : forêt ancienne restée feuillue sans interruption depuis le 18ème siècle.  \n\n4) forêt ancienne subnaturelle : forêt ancienne restée feuillue sans interruption depuis le 18ème siècle.  \n\n5) forêt ancienne subnaturelle : forêt ancienne restée feuillue sans interruption depuis le 18ème siècle.  \n\nPour tout complément d'information sur cette donnée, consultez http://geoportail.wallonie.be/catalogue/cf140ebb-797e-44fb-bab0-c240f165e1e9.html",
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