Journal Algérien des Régions Arides
Volume 15, Numéro 1, Pages 90-100
2023-02-06
Floristic Diversity Of A Saharan Region In The South East Of Algeria
Authors : Rekis Abdelkrim . Elbar Djenette . Belhamra Mohamed . Laiadi Ziane .
Abstract
Drylands have less vegetation cover than wetlands due to lack of rainfall. However, the plants in these areas are of economic and environmental importance because they adapt to this special climate and soil, and this feature we benefit from in the adaptation of vegetation. Our work consists of a floristic study of an arid region and seeing its composition and life forms. We used the method of minimal areas. The floristic composition and life form categories of species distribution were analyzed in Tolga region. In total of 63 species belonging to 28 families, half of which are perennial species and half of ephemeral species with biological types dominated by chamaephytes (49%) and then therophytes (25%). The average recovery rate of 28.10% and 24.60%. For the occurrence index, the majority of the species inventoried are accidental species and accessory species, with three species being regular. Specific richness presents 17 and 15.
Keywords
Arid region ; flora ; floristic wealth ; form life ; Tolga
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