Growth models in investigating oriental beech (Fagus orientalis Lipsky.) juvenilities growth performance in the Western Black Sea in Turkey (Devrek-Akçasu case study)

Abstract

In this study, Richards, Gompertz, Weibull and Logistic Growth Models are applied to the results of root collar diameter measurement carried out between the years 2001-2010 in beech natural juvenilities situated within 20 experimental areas, sized 25×40m, in Devrek-Akçasu Forest Range District 56c division, in the size of 16.0 ha oriental beech natural regeneration areas, so as to define the best growth model to estimate the juvenility growth. According to results, it is ascertained that the best model to be used to estimate the oriental beech juvenility height and root collar diameter development -with the ecological conditions of Akçasu district as well- is Gompertz Growth Model by 99.48 and 0.97 of model efficiency respectively. © 2011 University of Bucharest. © 2011 Elsevier B.V., All rights reserved.