Determination of plant diversity indices for fir stands in Bolu Aladağ region

This study was carried out within the boundaries of Aladağlar Aladağ Forest Enterprise in Bolu. In the study area, 640 of the trial areas with 0,5x0,5 m2 sample were taken by systematic sampling method. Sample areas were selected according to GA, GB, GC, GD stand types and the areas were selected according to north and south aspects. Field studies were conducted in four different periods (June, July, August, September) within vegetation period. 122 taxa were determined at subspecies, variety, genus and family level. The determined 122 taxa are all taxa falling to 80 quadrades taken from different points in different months and aspects for each stand with systematic sampling method. The most rich stand type in terms of taxon number was determined as GC stand with 84 taxa. Although the number of individuals counted more than GA and GD stand types, GC stand was found to be richer in terms of taxa number.