The research was conducted in the Local Unit of Slovenian Forest Service in Črnomelj, the Forest Management Unit Mirna gora, section no. 3. The purpose of the thesis was to re-compare classical and mechanized felling and harvesting. As this kind of research was carried out 13 years ago, our study was conducted in a comparable manner. The department had already been divided into five strata: two for mechanized technology, two for classical technology, and one with no intervention due to further research. Before harvesting, the centres of the plots were found and additionally marked. After the felling, damage and forest canopy density were recorded. The findings show 19.4 % of damage in classical technology and 24.4 % of damage in mechanized technology (new, new and old damage). The total damage (new, old, new and old damage) is 35 % in classical and 49.4 % in mechanized technology. There is more old damage in both technologies. As far as classical technology is concerned, the worst damage was found on tree trunks, in mechanized technology, the most damage was found on tree trunks, too. The study found that forest canopy density is lower in classical technology. Light availability is higher in the stands of classical felling, which can be justified by the intensity of thinning. The lowest light availability was found in stratum five, where there was no thinning or other action. The comparison with the results of foreign research indicates that there is more damage in mechanized felling in Slovenia.
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