érosion éolienne (1) sable (1) région (1) paramètre (1) affectation des sols (1) paysage (1) couverture spatiale (SIG) (1) pays (1) danger (1) champ (1) environnement (1) climat (1) Case (1) Area (1) Area (1) Year (1) Wind erosion (1) Sowing (1) Sand (1) Rangelands (1) Olive (1) Nature and nurture (1) Landscapes (1) Land use (1) Impact (1) Grammar, Comparative and general--Case (1) Gifts (1) Euthenics (1) Ecology (1) Driving of horse-drawn vehicles (1)