Characterization of floral diversity in oak forests of western Algerian region

The objective of our study is to present the richness, spatial distribution of the shrub and the structure of the main tree species in five oak Algerian western regions. The methodological approach is based on a survey of plant species followed by a floristic analysis of 6 squares in each forest. The results obtained show a fairly low phytodiversity in the forests studied. Species richness was 36 species, 19 genera and 16 families on average for each station in 66 floristic surveys made. There is the influence of altitude, exposure and climate and anthropogenic factors on the structure and distribution of vegetation.