perledalgerie Posted February 28, 2008 Report Share Posted February 28, 2008 posté par console Les sols constituent les fondements de quasiment l'ensemble de notre alimentation et de nos ressources forestières. Pourtant ces ressources continuent à subir des dégradations étendues partout dans le monde, à travers des processus tels que la désertification, la salification, l'acidification et la contamination http://www.planetecologie.org/ENCYCLOPE ... .htm#UrbaS Quote Link to comment Share on other sites More sharing options...
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