Features of basic wood density dynamics for stem wood of European spruce in prevailing forest site types on the territory of Poloninskyy ridge (Ukrainian Carpathians)
Journal Title: Лісівництво і агролісомеліорація - Year 2016, Vol 129, Issue
Abstract
The European spruce (Picea abies L.) stands were studied in the territory of Poloninskyy Ridge in Ukrainian Carpathians in moist fairly fertile (C3) and moist fertile (D3) prevailing forest site types (FST). The peculiarities of wood density dynamics for the stem wood, bark covered wood and a bark were analyzed in oven-dry state and under full humidification. The basic wood density was analized, too. An average basic wood density in FST C3 is 392 ± 9 kg•(m3)-1, and in FST D3 it is 345 ± 8 kg•(m3)-1 The maximum difference in average values of basic stem density in different types of site conditions is peculiar to the bark – 103 kg•(m3)-1 (25.4 % of the value in the FST C3) as compared to the rest of the fractions, where the difference is less significant: the value of the average basic stem wood density differs by 45 kg•(m3)-1 (12.0 % of the value in the FST C3) and bark covered stem wood by 64 kg•(m3)-1 (16.4 % of the value in FST C3). An age dynamics simulation was done for the basic stem wood density and its dependence on the diameter and height of the stem. It was found that the reduction of the values at a young age and the gradual increase to the age of maturity is peculiar to the dynamics of average basic stem wood density of European spruce in FST C3 and D3. Average values of the characteristic are higher in the FST C3 compared to FST D3.
Authors and Affiliations
A. Zadorozhnyy, H. Hrynyk
Keywords
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