Study of Flora, Life Form, Chrotype, and Diversity Species in habitat of Prangos uloptera DC. in Mianroudan- Khalkhal

This study was carried to examine the composition, characteristics and diversity in species Prangos uloptera DC site. In each control and homogenous area, homogenized units in 3 sites were selected for sampling. After observation of plant species in the area during the growth season, plant taxonomy was collected by conventional methods and various flora and other resources to identify families, genera and species of each were determined. Diversity, richness and evenness, dominance was determined in the habitat presence species and control by using plant diversity indices. Different indicators studied were tested by t-test using SPSS software. The results showed that the largest families in terms of number of species, the Lamiaceae with 14 species (19.18%) and Poaceae with 13 species (17.81%), the Fabaceae and Asteraceae each with 10 species (13.70%) and Apiaceae with 6 species (6.85%) have the highest species. The habitat presence species, 61 species belonged to the 15 families and 48 genera and the control sites, 50 species belonging to 34 genera and 13 families collected and identified. Life forms of plants include 26.32% hemi-cryptophyte, 13.82% therophyte, 4.61% chamephyte, 2.63% geophyte and 0.66% phanerophyte. From the view point of regional elements, plants of this region include 67.12% Irano-Touranian, 12.33% Irano-Touranian, Mediterranean and Euro-Siberian, 9.59% Irano-Touranian and Euro-Siberian, 5.48% Irano-Touranian and Mediterranean and 5.48% is related to other elements. The results showed that there was no significant difference between evenness index in the presence and absence of species -at the level of 95 percent. But there was significant difference in dominance and richness differences in the two regions’ comparison of the diversity index.