BF, Dept. of Wood Technology, Lj. (BFLES)
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Variabilnost dimenzij trahej v lesu bukve s Panške reke : diplomski projekt = Dimension variability of vessels in the beech wood from Panška reka, Slovenia : B. Sc. thesisGnidovec, GašperPri 6 bukvah (Fagus sylvatica L.) z rastišča Panška reka pri Ljubljani smo merili dimenzije trahej v branikah, nastalih v letih 2008, 2009 in 2010. Proučili smo razlike v dimenzijah prvih in zadnjih ... nastalih trahej v braniki, ter njihovo variabilnost v isti braniki po obodu drevesa. Branike smo od ranega proti kasnemu lesu razdelili na pasove po metodi tedenskih prirastkov. V vsakem pasu branike, ki je nastal v določenem tednu tekom rastne sezone, smo izmerili dimenzije trahej (površino, minimalni in maksimalni premer). Ugotovili smo, da je bila površina prvih trahej 3,11-krat večja od površine zadnjih trahej, minimalni premer prvih trahej je bil 1,65-krat večji in maksimalni premer 1,81-krat večji od zadnjih nastalih trahej. Podatki kažejo, da obstajajo statistično značilne razlike v površini trahej med prvo in zadnjenastalimi trahejami ter med branikami, nastalimi v različnih letih. Podobno smo ugotovili tudi za maksimalni in minimalni premer. Primerjava dimenzij trahej po obodu dreves je pokazala, da so imele največji standardni odklon površine prvih in zadnjih nastalih trahej v letu 2008. Relativni standardni odkloni minimalnega in maksimalnega premera so tako med leti, kakor tudi med prvimi in zadnjimi trahejami, zelo podobni. Minimalni in maksimalni premer trahej sta se izkazala kot najbolj relevantna podatka za ovrednotenje dimenzij trahej po braniki, saj imata najmanjši relativni standardni odklon. Površina trahej je do okoli 170. dne v letu (19. junija) dokaj konstantna, potem vse do okoli 220. dne v letu (8. avgusta) rahlo pada, zatem pa je zopet konstantna. Podobne trende smo opazili tudi pri minimalnih in maksimalnih premerih trahej.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [G. Gnidovec], 2011Language - slovenianCOBISS.SI-ID - 1953161
Author
Gnidovec, Gašper
Other authors
Čufar, Katarina |
Gričar, Jožica, 1978-
Topics
les |
bukev |
Fagus sylvatica L. |
traheje |
analiza slike |
histometrija |
wood |
beech |
Fagus sylvatica L. |
vessels |
image analysis |
histometry
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Call number – location, accession no. ... |
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Knjižnica BF za lesarstvo du1 0000000020 IN: 020110114 Knjižnica BF za lesarstvo du1 20 IN: 020110114 |
on loan - outside loan, due date: 08.04.2024
Expected to be available after: 09.08.2024 (1. in queue) |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Gnidovec, Gašper | ![]() |
Čufar, Katarina | 02937 |
Gričar, Jožica, 1978- | 22609 |
Source: Personal bibliographies
and: SICRIS
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