The aim of this thesis was to assess the effectiveness of forest regeneration after the storm on the selected sites in Tolmin region and to offer management guidelines for future decision - making on the matter, considering that a frequency and intensity of extreme weather conditions are expected. In the windthrown areas formed in July 2008 we established 15 sample plots (10 m x 10 m) on the naturally regenerated sites and 15 on the artificially regenerated, which were planted with spruces and beeches. Secondly, we measured all the dominant naturally regenerated seedlings and planted seedlings. In addition, an evaluation of the coverage and density of natural regeneration, shrub and herb layers was carried out. In the naturally regenerated stands the density of young trees accounted for 8.000 trees/ha, where as on the artificially regenerated sites we recorded 4.556 trees/ha. Eight different tree species were identified, the goat willow, common beech, sycamore and fir being the dominant ones. On average herbs and shrubs spread over 64 % of the surface, with in which the raspberry bush represented the highest percentage. The density of planted seedlings accounted for 2.765 specimens/ha. The outcome of planting was highly satisfying, since mortality reached solely 7 % three years after the plantation. Shrub and herb layers along with the raspberry cover had a negative impact on the density of the regeneration. The results of the study indicated that the artificial regeneration was more successful than the natural. Nevertheless, due to its significantly high costs the former is more applicable to the most fertile sites and areas exposed to erosion hazard as well as to those with a luxuriant ground vegetation or a small number of seed trees.
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