تعيين و تحليل كمي تيپ هاي جنگل در رابطه با جهات جغرافيايي در منطقه قاميشله مريوان

Determination and quantitative analysis of forest types with respect to aspect in Ghamisheleh,Marivan, Iran

Ghamisheleh forests located at 36 km of northern Marivan, Kurdistan province, were quantitatively analyzed, on the basis of IVI (Importance Value Index ), a total of two forest types, Quercus libani Olive. on north, north west and north east and , Quercus brantii Lindl. on south, south east, south west and east, aspects. Spatial patterns of species distribution were characterised by clumped ( contagious ) distribution in all forest types. The mean total tree basal area ( 25.4, 22.9 m2/ha) were exhibited by Quercus libani and Quercus brantii types,respectively and the total density (494.1,429.7 tree/ha) were determined by Quercus libani and Quercus brantii types,respectively. Maximum IVI among all the aspects was shown by Quercus libani ( 238.1). Minimum similarity coefficient was observed between north, north east, north west and south, south east, south west, east.