Dynamics of natural regeneration of the mixed stand of beech, fir and spruce in virgin forest Lom in the Republic of Srpska [Bosnia and Herzegovina]
2006
Govedar, Z.,University of Banjaluka, Banjaluka (Bosnia and Herzegovina). Faculty of Forestry | Krstic, M.,University of Belgrade, Belgrade (Serbia). Faculty of Forestry
In the mixed stand of beech, fir and spruce in the virgin forest Lom, the basic elements of structural form and natural regeneration were researched on a permanent sample plot (P = 1.0 ha). Special attetion was devoted to the analyses of the effect of the degree of closure on the process of the stand natural regeneration. On the sample plot, area 1.0 ha, the number of individual grown-up beech, fir and spruce trees is 674, and their mixture proportion is 68.1% : 18.1% : 13.8%. Beech dominates in the category of grown-up young plants which is caused by its social matching. Beech trees, after the age of 10 years, with the increasing age rapidly increase crown diameter and, at the same age, beech trees are higher than fir trees on average for about 10 cm. There is a statistically significant difference in total abundance of young plants between the areas with low stoniness and high percentage of ground flora, and the areas with intensive surface stoniness. A statistically significant difference was determined in the regeneration abundance depending in the effect of micro-habitat exposure, i.e. between the SE and N exposures. The regeneration abundance in micro-habitats with SE exposure is two times higher than in those with N exposure. The dominance of beech in the lower, underwood layer is caused by the process of beech-ing, while fir seedlings are abundant in the regeneration category.
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