معرفي فلور، شكل زيستي و پراكنش جغرايايي گياهان منطقه ورامين

Introduction to the flora, life form and plant geographical distribution of Varamin region (Tehran)

The Varamin region with an area of 2160 Km , situated in SE of Tehran. It consists of cultivated Lands and numerous hills. Avarage annual precipitation reaches to 171.3 mm. Flora of this region includes 202 plant species that belong to 161 genera and 35 families, the important families are Asteraceae, Chenopodiaceae, Poaceae, Brassicaceae with 18.81%, 16.83%, 10.4%,7.42%, respectively. Life forms of the plant species of Varamin region include: Therophytes 57.43%, hemichryptophytes 26.24% , chamaephytes 6.43% Phanerophytes 4.95% and cryptophytes 4.95%. from the view point of regional elements plants of this region include: 45.13% Irano-Touranian, 14.36%. Cosmic, 12.82% Irano- Touranian and Mediterranean, 12.82% Irano-Touranian and Saharo-Sindian, 7.69% Irano-Touranian, Mediterranean and Euro-Siberian, 3.08% Irano-Touranian and Euro-Siberian, 3.08% Irano-Touranian, Saharo- Sindian and Mediterranean, 1/02% Irano-Touranian, Euro-Siberian and Soharo Sindian determined.