Abstract
Trembling aspen (Populus tremula L.) is one of the most resistant to cold natural species in Turkey. In spite of its
importance, there is no research on the yield. Hence, site productivity was determined and yield Table for undisturbed natural
trembling aspen stands in Turkey was developed. Data were obtained from a total of 46 plots ranging in age from 17 to 82
years. Yield Table indicates that trembling aspen is very slow growing in young and middle age and Current Annual
Increment (CAI) and Mean Annual Increment (MAI) values do not reach its maximum value, even at age 70. This is a proof
that trembling aspen is not a fast growing species as expected. The reason for its slow growth is attributed to very short
period of growth at very high altitudes. However, in the event of 50 years rotation age, mean annual volume increments of
8.0, 3.6 and 1.1 m3
are estimated for trembling aspen for site classes I, II and III, respectively. At extended rotations, trees of
pole sizes could be obtained on all site classes.
