بررسی عوامل موثر در پراکنش جغرافیایی گونه های پسته وحشی در استان کهگیلویه و بویراحمد

The kogi/oyeh and boyerahmad province with 997000 ha. Area of forest (20 percent forests of west) has the most dense forest in zagrosS region. there are 72 species of trees belong to 30 families in this region which ,800,/0 is querfus persica 15% pistacia atlantica and 5% is other species,this research have been done for recognition of broadcast area and investigation of factors which effect on broadcasting of pistacia atlantica limits of broadcasting area have been drown by using field information and topgraphical map 1:50000) 30 samples of each population have been selected on the basis of cover crown ,densitiy and sparsenss.broadcasting area and predominant species .quentitative and qualitative measurements have been done on them .growing conditions and general status of each Pests and discuses ,type and method of revenue have been studied the result shows that, in general there are 6 types oak -pistacia , pistacia -oak ,pistacia atl. -pistacia in this region.the largest broadcast area are 271977 and 96454 ha.the best type oj them with considering density and cover crown are :types 1 and 2 with 83.9 number of trees in each ha. And 40.8 % of cover crown ,type 2 with 64.9 trees in each ha. And 22.5% of cover crown .the. growing regions of this type are between 1100 and 2700 meter from sea level and they are usually with slope of 25-75 % south and south - west direction. These two type usually growing on asmary , gachasrn, bakhtiary, servac , gadun and pubdeh formation, type 3 and type 4 with 90766 and 45104 area respectively .15.2 and 16.5 % of cover crown 54.1 and 44.9 trees in each hec. Are in modrate condition with respect to other types. They growes on gachsaran and aghajary formation with slope of 30-60 % the direction of these area are usually west , south and south - west altitude of this area is 900-1300 meter from sea level.type 5 growes on the servac , bakhtiary , pabdeh and asmary formations with altitude of 1200-1500 meter from sea level, with slope of 15 - 55% in direction of south ,west, east and north - west density and cover crown of this type are 53.3 trees in each hec. And 15 % respectively type 6 usually grows on gachsaran , aghajari and asmary jormations . The Tistant of this type for different soil is more them other types . They growes in cold tropical region altitude of this regions arefrom 950 to 2400 meter with respect to sea level,with slope of 20-65 % and direction of south , west and south west . The density and cover crown. There are 41.8 trees in each hec. And 10 % respectively. Key words: Effctive factors, geographical broadcasting, wild pistacia , kohgiloyeh and boyerahmad

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پسته ، پسته وحشی ، کهگیلویه و بویراحمد ، جنگل ها ، پراکنش جغرافیایی ، بلوط ایرانی ، بلوط ، بنه ، میوه های جنگلی ، گونه های جنگلی ایران ، سقز (گیاه) ، پوشش گیاهی ، جنگل های زاگرس ، گونه های جنگلی زاگرس ، زمین شناسی ، خاک شناسی ، آب و هوا ، گیاه شناسی ، تیپ های پسته وحشی ، خنجوک ، افرا ، بادام ، زادآوری ، پایه های مادری ، بذرها ، آفات و بیماری ها ، اکولوژی ، کلخونگ