African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6623

Full Length Research Paper

The use of growth models in ınvestigatıng oriental beech (Fagus orientalis Lipsky.) natural juvenitilies growth performance

  Halil Barış Özel*1, Ufuk Karadavut2 and Murat Ertekin1        
  1Department of Silviculture, Faculty of Forestry, Bartın University,  74100-Bartın, Turkey. 2Department of Zootechny, Faculty of Agriculture, Bingöl University, -Bingöl, Turkey.
Email: [email protected]

  •  Accepted: 30 August 2010
  •  Published: 18 September 2010



In this study, Richards, Gompertz and Weibull Growth Models were applied to the results of root collar diameter measurement carried out between the years 2004 - 2010 in beech natural juvenilities situated within 10 experimental areas sized 25 m x 40 m in Bartın-Yenihan Forest Range District 70b division in the size of 12.0 ha oriental beech natural regeneration areas so as to define the best growth model to estimate the juvenility development. According to attained results, it was ascertained that the best model to be used and to be able to estimate the oriental beech juvenility height and root collar diameter development -with the ecological conditions of Yenihan district as well- is Richards Growth Model by 95.31 and 0.95 model coefficient of activity, respectively.


Keywords: Oriental beech, growth model, height, root collar diameter, natural regeneration.