Plant communities (4) Plants (3) végétation (2) synécologie (2) phytosociologie (2) froid (2) climat méditerranéen (2) ordre (2) Area (2) Area (2) Vegetation classification (2) Soils (2) Order (2) Mediterranean climate (2) Cold (2) Authors (2) Soils (2) recherche (1) presse écrite (1) analyse (1) gypse (1) abords (agglomération) (1) Département du Nord (1) Control (1) Stone (1) Steppes (1) Research (1) Press (1) Novelle (1) North (The word) (1)