Site index for mixed stands of scots pine (Pinus sylvestris L.), Uludağ fir (Abies bornmülleriana Mattf.) and beech (Fagus orientalis lipsky) in Zonguldak forest district

Abstract

Site index curves and tables have been prepared for uneven aged mixed stands of Scots pine (Pinus sylvestris L.), Uludag fir (Abies bornmülleriana Matff.) and beech (Fagus orientalis Lipsky.) in Zonguldak territory, Turkey. Curves and tables have been constructed for every tree species using data from 31 sample plots and 93 stem analyses. Lloyd-Hafley’s method (1977) was used to construct site index curves and tables. Results were compared with Uludağ fir and beech site index tables prepared for uneven aged pure stands. Results show that there are differences between uneven aged pure and mixed stands developments, especially at Uludağ fir.Site index curves and tables have been prepared for uneven aged mixed stands of Scots pine (Pinus sylvestris L.), Uludag fir (Abies bornmülleriana Matff.) and beech (Fagus orientalis Lipsky.) in Zonguldak territory, Turkey. Curves and tables have been constructed for every tree species using data from 31 sample plots and 93 stem analyses. Lloyd-Hafley’s method (1977) was used to construct site index curves and tables. Results were compared with Uludağ fir and beech site index tables prepared for uneven aged pure stands. Results show that there are differences between uneven aged pure and mixed stands developments, especially at Uludağ fir.