Résumé:
Biodiversity is the natural reservoir of all types of resources (Animal, plant and microbial)
furthermore the relationships that may exist between them. The objective of our study is to
enrich to the recognitions on biodiversity of MOSTALAND Park well we used as a basis "the
new flora of Algeria and the southern desert regions of Quezel and Santa (1962-1963)" , "the
maghreb flora"and "The flora of Algeria by Battandier and Trabut (1888)"
Our revealed results show that our study environment has remarkable plant diversity,
generated by the existence of several plant formations. The number of species registered is 80
species belonging to 32 families. Nevertheless, this wealth is threatened by several factors
such as drought and anthropozoic action. That is, we are faced with biologically rich but very
sensitive environments.