Introduction of flora, Life from and Plant Geographical distribution of Warsan region in Ashtian (Markazi Province) Iranin

Abstract

Warsan region covers an area of 990 hectares situated in east of Ashtian city. The altitude of study area is throught 2042 to 2314M. The amount of annual precipitation of the area is 333/11 mm and mean annual temperature is 11.5oC. The aim of this research was to identify the plant species, introducing the flora, determination of life forms and geographical distribution of species in the area. For this purpose, plant specimenswere collected from the area during growing season in 1387. The biological spectrum of the area was plotted by means of life forms results. The position of the area within Iran’s phytogeography classification was studied based on geographical distribution data. In this study, 270 species were collected and identified. These species belong to 37 families and 139 genera. The following families had the highest number of species: Asteraceae (45 species), Papilionaceae (36 species) Geramineae (22 species) and Apiaceae (19 species). Hemicryptophytes with 127 species (47%) were the most frequent life form. Investigation on geographical distribution of species showed 201 species (74.44%) belong to Irano-Turanian region.

Keywords

• flora
• life form
• chorotype
• warsan
• ashtian
• iranin