2016, Vol. 4, Issue 6, Part B

author(s)
Ali Mohammad Asaadi and Asghar Khoshnod Yazdi

abstract
Thymus transcaspicus Klokov. (Lamiaceae) is one of the most important medicinal plants had been used in traditional medicine in natural sites of mountainous areas of Iran. This study is subjected to determine the main autecological properties of plant in North East Iran. In this site, different parameters such as climate characters, vegetation studies, physical and chemical analysis of the soil were determined. The results showed that Thymus transcaspicus could be adapted in regions with arid cold climate, annual rainfall average of 295 mm and annual average temperature of 11.28 °C. Thymus transcaspicus have dispersed in northern, south and north east slope and altitude 1200- 1900 m of sea level in area. It was observed that this plant generally prefers sandy loam texture, lime, alkaline pH and non-saline soils. The content of organic matter is rich in its habitat. Individual plants height varies from 7 to 25 cm with canopy diameter of 20 to 60 cm. Mean canopy cover was 23.51% in the habitat. Distribution pattern of plant is clumped. According to the results of the vegetation studies, average of the current yield was 851.96 kg/ha and 43000 species per hectare was estimated as average of the density of Thymus transcaspicus.