LA FLORE DE SUCCESSION DES PÉRIMÈTRES AGRICOLES ABANDONNÉS (CAS DE LA PALMERAIE) DANS LA RÉGION D’OUARGLA (SUD-EST ALGÉRIEN)

Abstract

Rangelands in the Saharan regions are the areas that have the real vegetation, but they have suffered disruption to human action. After the abandonment of farming our study to characterize the Flora succession of these abandoned after the disturbance of the natural ecosystem boundaries, why we chose the abandoned palm plantations that are new aims have been place in the context of development. The qualitative study of the Flora has identified 07 plant species spread over 06 botanical families. The family of Caryophyllaceae is the most representative with a rate of 28.57% of the total Florainventoried, families Amaranthaceae, Boraginaceae, Brassicaceae, and TamaricaceaeZygophyllaceae are represented with a rate of 14.28% for each. Concerning the biological types was found that Therophytes represent the most important biological type with a rate of 57.14% of the total Flora. All species inventoried are spontaneous when it comes to the origin and are dicotyledon with the absence of introduced species and monocotyledon. The qualitative analysis of the total Flora surveyed shows that species showed a strong presence and are most abundant: Oudenyaafricana,Moltkiopsisciliata, Paronychiaarabica