Evaluation of plant diversity considering to life form and growth form in parts of Taleghan rangelands

In this paper، plant diversity in Taleghan rangelands has been investigated. Sampling was done with Random-Systemetic method. Then، sampling in each unite was done along three 150 meter transects. 15 plots with determined size through the cover spread established that plots had 10 meter distances along each transect. In each plot (1m2) plants were identified and recorded. Then their family، life form، biological form، growth form were determined. Shannon-Wiener and Simpson indices were done with Ecological Methodology Software. In this study results showed، 43 species were belong to 16 families. In order to، Grameneae family had the maximum amount among plant species، and Hemicrypthophit were abundant life form، also forbs had maximum percentage of growth form in that region.