Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
858 4 |
Ultima descărcare din IBN: 2023-05-26 16:12 |
Căutarea după subiecte similare conform CZU |
630*81 (5) |
Silvicultură (331) |
SM ISO690:2012 СОПУШИНСКИЙ, Иван, КОПОЛОВЕЦ, Ярослав, ТЫМОЧКО, Игор, МАКСЫМЧУК, Руслан. Влияние структурных изменений ксилемы пихты белой на объёмную массу древесины. In: Ştiinţa Agricolă, 2019, nr. 1, pp. 94-99. ISSN 1857-0003. |
EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
Ştiinţa Agricolă | ||||||
Numărul 1 / 2019 / ISSN 1857-0003 /ISSNe 2587-3202 | ||||||
|
||||||
CZU: 630*81 | ||||||
Pag. 94-99 | ||||||
|
||||||
Descarcă PDF | ||||||
Rezumat | ||||||
The article presents the research results of the influence of structural changes of the xylem of silver fir on wood density which has been reflected in the grouping of the number of annual rings in 1 cm and in the differences in the volumetric swelling of wood. For the study, wood samples in the fir stands of Transcarpathia (Ukraine) at the altitude of 800 m asl were selected. Silver fir wood was classified into four groups according to the number of annual rings in 1 cm and to wood density. The first group is represented by juvenile wood with the number of annual rings less than 2 pcs.∙cm-1. The highest density of wood with a moisture content of 10% was typical for the wood group with annual rings more than 13 pcs.∙cm-1, where wood density varied from 500 to 582 kg∙m-3 with a mean value of 533 kg∙m-3. Mean values of wood swelling indicate a significant difference between juvenile wood and mature wood with the number of annual rings of more than 13 pcs.∙cm-1. There was also a difference for the radial swelling of wood in the lower and upper ranges of the 95% confidence interval for the mean value. The relationship between volumetric swelling and wood density was described by an equation with the power function. |
||||||
Cuvinte-cheie Abies alba, Annual rings, Swelling anisotropy, Specific gravity, Wood biology, Ukrainian, Carpathian, Abies alba, Годичный слой, Анизотропия разбухания, Объёмная масса, Биологическое древесиноведение, Украинские, Карпаты |
||||||
|