Utjecaj konkurencije odraslih stabala na podmlađivanje jele u šumama bukve i jele (sa smrčom) na Bjelašnici

Abstract

 
 Silver fir is one of the most important tree species not only in Bosnia and Herzegowina, but also in whole Europe. For natural regeneration of fir the most important factors are site condition, share of fir in stand and tree species composition. The aim of this study was to determine if there are statistical important differences in the number of seedlings and height increment at different competition sitations between adult trees. Study area was located at mount Bjelašnica. Data were colected on circular plots with a radius of 12.62m for trees with dbh above 5 cm, and radius 3m for regeneration layer. The competition is expressed using Hegyis competition index, where for calculation a dominant tree from each quadrant was used. We analysed total number of fir individuals in regeneration layer and height increment for categories 50-130 cm height and 0.1-5 cm dbh. The results showed that there are no statistically significant differences in the number of for seedlings at different values of the Hegye index. Statistically significant differences were found in terms of height increment. Height increment decreased with increasing competition between trees.