The study of effective factors in diversity of Pistacia SP. In Kermanshah province forests
2006
khodakarami, Yahya | Fatahi, Mohammad | Tavakoli, Ahmad | khanhasani, Masomeh | BolandBakht, Fereydun
The wild Pistacia is a species, which has economical and important prices in the Kermanshah province forests, but huge exploitation has destroyed it in recent years. There are two species spectes namely Bana ( P.atlantica ) and Khinjuk ( P.khinjuk ) in Kermanshah province . Which Khinjuk distribution is so limit but in other hand Bana has a wide distribution in the forests beside other species like Q.brantii , Q.infectoria and Acer monspessulanum which have created different types in the region . This types include: 1 _ The type Quercus brantii _ Acer monspessulanum _ Pistacia in 102326 ha 2 _ Type Quercus brantii _ Quercus infectoria _ Pistacia atlantica in 16994 ha 3 _ The type Quercus brantii _ Pistacia atlantica in 61405 ha So base on predicted programs in research method, the field operation forms provided and in 30 plot with 900 square meter has been studied require information includes: kind of species, diameter in breast height, of the number sprouts for each species, vegetative forms, crown diameter, height, clean bole, height, crown height, kind of reproduction system for each species, studying the cover plants, region p-slope, kind of climate, altitude (from sea level), _ and finally after information processing and concluding it was cleared that : - Pistacia atlantica types about crown coverage are open forest and about stand density index in Cochlear classification are in 4th class. - The basal area in Pistacia atlantica types is more than the Basal area in other species. - Pistacia atlantica has the most crown coverage percent after Q.brantii in per type. - The average height of Pistacia atlantica is more than the other species average height. - Pistacia atlantica types are distributed in 8 sublimate.
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