Abstract
Desertification in Algeria essentially concerns the steppes of the arid and semi-arid regions of the high plateau which are subject to recurrent droughts and increasing anthropogenic pressure; this phenomenon results in the reduction of biological potential. Faced with this alarming situation, a project called the green dam was established with the aim of maintaining ecological balance. The work carried out consists of taking stock of the reforestation of the green dam in the Djelfa region and its impact on phytodiversity by qualitative and quantitative analysis, it aims to highlight the richness of the flora in this area.40 phytosociological surveys used a subjective sampling between March to June 2024 with a minimum surface of 100 m2 allowed us to draw up a list of 109 plant species distributed across 21 botanical families, Asteraceae, Fabaceae, and Poaceae as the most dominant families with (27.5%, 13.8% and 12.8%) respectively. Therophytes represented 57.8% of the biological spectrum, this translates into dominance of annual herbaceous plants with a short life cycle better adapted to semi-arid and arid conditions. Mediterranean species constituted 38,5% of the flora, showcasing the ecological significance of the region. Overall, the results reveal a remarkable floristic richness despite local environmental containments which threaten its sustainability, hence protection and development measures are necessary by managers in order to preserve this natural heritage.
Published Version
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