Tree species diversity of
natural mixed stands in eastern Black sea
and western Mediterranean
region of Turkey
Ramazan Ozcelik*
Faculty of
Forestry, Suleyman
Demirel University, Cunur - 32260, Isparta, Turkey
(Received: December 04, 2007; Revised
received: April
05, 2008; Accepted: July 10, 2008)
Abstract: Differences in tree species diversity
of natural mixed stands were compared between the eastern Black sea region
(EBSR) and western Mediterranean region (WMR) of Turkey, to clarify the effects of
differences in forest structure, focusing on the tree species occurring in
each. Species diversity, with special reference to stand structure, of natural
mixed stands was quantified by Shannon-Wiener index (H?), equitability index
(J?), and species richness index (R). All species diversity indices were
significantly higher in EBSR than in WMR. According to the coefficients of
homogeneity (CH), stands in EBSR are generally have
uneven-aged stand structure, but in WMR even-aged stand structure is more
common. Uneven-aged stands have more tree species diversity than even-aged
forests due to complex vertical forest structure and species composition.
According to Pearson?s coefficients, species
diversity indices and richness are closely related the average stand diameter
(Ds) in uneven-aged stands of EBSR, but average stand diameter (Ds), age (A),
and stand density (SDI) are the most important stand parameters in even-aged
stands of WMR in Turkey.?
Key
words: Natural mixed stands,
Species diversity, Stand parameters, Stand structure
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