Etude floristique et biogéographique de quelques formations végétales dans les forêts l’Arbatach et forêt Zemmouri. (W.Boumerdès).

Abstract

The present work was carried out at the level of the two forests of the wilaya of Boumerdès, the dominant forest of Arbatach "El kahla" and the littoral forest in the municipality of zemmouri, made up of Quercus ilex and Pinus halepeusis In this study we base ourselves on floristic, ecological and biogeographical criteria. We have identified the plant species of the two stations, which are dominated by the Mediterranean elements, this flora is biologically characterized by the Therophytes as well as the species of the Asteraceae family. Diachronic study shows that the vegetation cover is affected by several factors such as overgrazing and human activity. The impact of these factors is largely expressed in the increasingly rapid depletion and substitution of vegetation cover species.