Growth models of height of trees in even-aged stands of sessile oak in the western part of the Republic of Srpska

Abstract

This paper presents the results of research in pure mature stands of sessile oak about 130 years old (100–120 years, VII age class), in the western part of the Republic of Srpska. On the basis of the data obtained from the research, models of growth in height of sessile oak trees were constructed. The research was carried out in acidophilic forests of sessile oak at three sites (Kozara - III site index, Motajica - II / III site index and Crni Vrh - IV site index).

Three trees from the dominant tree category in each locality were selected for the construction of the model tree growth and for the analysis of height tree growth. The growth of the tree was reconstructed by the standard method of dendrometric analysis. For the approximation of height growth, the Prodan function was chosen from the analyzed functions.

After regeneration in stands, the start time and the frequency of the thinning can be planned based on the constructed growth models in height. This will positively affect the vitality, stability and level of the production of stands.