الخلاصة:
The végétation is analyzed by two main descriptors that are bioclimat and human action. The
impact of thèse two factors is widely expressed by a loss and substitution of increasingly rapid of
species of vegetation.
Our study is based on the analysis and inventory of plant biodiversity in the Ghardaia region,
where we studied two different stations, namely « Valley El Malleh » in the municipality of Sebseb
and « Valley El drine » in the municipality of Noumerat. The study allowed us to count 28 species
represented by 16 families, while the most represented is that of the "Asteraceae" by 25%, and there are
11 families represented by one specie (3.57%).
Dominated by Mediterranean elements (46.43% ), this flora is morphologically characterized by
the dominance of perennials plants (40,38%) and biologically by Thérophytes (39,29%) .
In terms of propagation, we noticed that the most dominance type of plant is Cleome arabica in
both stations. In terms of density, it varies by species and the stations of studies.
