DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 7-8/2004 str. 45 <-- 45 --> PDF |
M l´rka: DI-HI .[INA KORI- OBIČNI- BUKVI-(Fu^us silv.ilica [..) V S.IIC1NAMA BJELOVARSKI: ... Šumarski list hr. 7 8. C XXVIII 120(14). 391-403 the diameter of the whole sample were equalized by the following linear equation: y = 0.0134 x+ 0.4123 The research confirmed the regularities defined in previous research. Furthermore, the absolute values of bark thickness in relation to diameter and average percentages of bark in technical roundwood are smaller then established in the previous research. That confirms the thesis that poor natural settings determine greater bark thickness, having in mind the differences in height above sea-level between the objects of this and the previous research. We established percentages of bark in volume of technical roundwood of 5.1 % in preparatory felling, 4.8 % in seeding felling and 4.7 % in final felling. For the sample of 693 sample trees in seeding felling the average percentage of bark in technical roundwood, calculated according to wood bulk with bark was 4.8 %. The results of the research were compared to the results of the previous research carried out in NPSO Velika (Krpan, 1986), and to usance applied in beech forest wood products, and significant differences were established. Key words: bark thickness, common beech, beech felling, Bjelovarska Bilogora. |