Impact of the structure of different selection forest types on their wind resistance in High Tatra National Park
2009
Saniga, M.,Technicka Univ., Zvolen (Slovak Republic) | Vencurik, J.,Technicka Univ., Zvolen (Slovak Republic) | Jaloviar, P.,Technicka Univ., Zvolen (Slovak Republic) | Kucbel, S.,Technicka Univ., Zvolen (Slovak Republic)
This paper evaluates the impact of the structure of two forest compartments with different tree species composition and their static stability against the windstorm that has affected the forest stands of High Tatra National Park (Slovak Republic) in 2004 and uprooted more than 12,000 ha of the forest. In the first compartment, Norway spruce was the dominant tree species with the admixture of Silver fir and Scots pine. In the second compartment, the Silver fir ratio reached 25% and Norway spruce as the main tree species accounted for 65%. In 1986 permanent research plots of 0.25 ha were established in both compartments. The structure of both selection forests before the calamity (year 1996) and after it (year 2009) was evaluated. Despite the high values of the static stability indicator in both stands, the trees of the upper and middle layer were uprooted or broken. In both stands, the lower layer of selection forest was preserved. In the second compartment, the current amount of fir in the next tree generation increased up to 41% after the windstorm. The regeneration processes were sufficient. The natural tree species composition creates good conditions for the application of close-to-nature management and the maintaining of the next forest generation without additional silvicultural interventions.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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