1Departement de Biologie, Faculte des Sciences, Laboratoire de Biotoxicologie, Pharmacognosie et Valorisation Biologique des Plantes (LBPVBP), Universite de “Dr. Tahar Moulay”, BP 138, Saida20000, Algeria
2Institue Nationale de la Recherche Forestiere, INRF Ain-Skhouna, Saida20000, Algeria
Departement de Biotechnologie, Faculte des Sciences de la Nature et de la Vie, Laboratoire des Productions, Valorisations Vegetales et Microbiennes (LP2VM), Universite des Sciences et de la Technologie d'Oran Mohamed Boudiaf (USTO'MB), BP 1505 El Mnaouar, Oran31000, Algeria
*E-mail: fbahlouli88@gmail.com
Online Published on 06 April, 2022.
The Algerian steppes are currently experiencing erosion of natural resources; the situation continues to grow and leads to an imbalance of local ecosystems. In this investigation, floristic surveys coupled with soil tests were carried out. The phytoecological study revealed a very strong degradation of the floristic richness and the phytomass with a predominance of the loamy-sand texture and a disturbance of the parameters studied from one site to another. The monitoring of ecological changes 60 years later shows a decrease in the number of species and families of 79 and 41% respectively with a disappearance of some facies that are replaced by other indicators of degradation with less forage value. This regressive dynamic is explained by two essential factors: land use changes and climatic aridity.
Steppe, Degradation, Monitoring, Ecological changes
