DIGITALNA ARHIVA ŠUMARSKOG LISTA
prilagođeno pretraživanje po punom tekstu
| ŠUMARSKI LIST 9-10/2022 str. 41 <-- 41 --> PDF |
Simpson Dominance Index (D): Simpson Diversity Index (SI): Pielou’s Evenness Index (PI): In these indices, pi: ratio of the number of plant species i to the total number of species, S: the total number of species. The indices were analyzed at alpha and gamma levels. If a diversity calculation is made for each part of the community, the diversity in question is alpha diversity. Gamma diversity is a larger scale consideration made by bringing together a large number of communities. It is the total species diversity in a landscape. The same indices were used for alpha and gamma diversity. While values from 10 quadrates were brought together as one sample to find out the alpha diversity for a stand, gamma diversity was calculated from all the quadrates for a group of stand, aspect or observation time. The PAST software (Hammer et al., 2001) was used to calculate the various index values used to determine the plant diversity. In order to determine the effect of stand type, aspect and observation time on plant diversity, multiple analysis of variance was performed and the averages were compared using the Tukey test. RESULTS REZULTATI Observed Taxa – Promatrani Taksoni The study area is within the borders of the Euro-Siberian phytogeographic region in terms of plant geography and is in the transition section to the xeric zone of Inner Anatolia. A total of 122 plant taxa were identified in the Trojan fir forests, of which 2 are family, 49 are genus, 59 are species, and 4 are subspecies and variety. Eight of these taxa could not be identified due to the insufficient vegetative and generative organs of the collected samples. While 48 plant taxa were seen in only one stand type in fir stands, 41 plant taxa were found in all stands. Except for unidentified taxa, 5 plant taxa were seen only in GA stands, 7 plant taxa in GB, 15 plant taxa in GC and 13 plant taxa only in GD stands (Table 2). In terms of stand types, the highest number of taxa were found in GC (84) stands. This was followed by the GD (78), GA (70) and GB (63) stands, respectively. By periods, the highest number of taxa was seen in July with 82 units. The lowest number was observed in September with 54 units. When evaluated in terms of aspects, more taxa were detected on the southern aspects (100 taxa) than on the northern aspects (89 taxa) in fir stands. As a result of the study, the highest number of taxa was found in GC stands with 39 units in July and on the south aspect, while the fewest taxa |