20.500.12556/RUL-126292 Dinamika vrzeli v bukovih drogovnjakih po redčenju s strojno sečnjo Gap dynamics in beech polewood stands after thinning with CTL technoloy Leta 2010 je bil oddelek 13 v gozdnogospodarski enoti Trnovo redčen s sistemom strojne sečnje. Po desetih letih smo ocenjevali, kakšne so značilnosti vrzeli v strehi sestojev, ki so nastale po redčenju v bukovih drogovnjakih. Izmerili smo širine krošenj dreves ob robovih vrzeli, nastalih po redčenju in analizirali vrzeli na podlagi podatkov laserskega skeniranja iz leta 2015 in ortofoto posnetkov iz leta 2020. Na podlagi ortofoto posnetkov ni bilo mogoče zanesljivo določiti zapiranja vrzeli. Iz terenskih meritev velikosti krošenj sklepamo, da drevesa ob robovih vrzeli razvijajo neenakomerno obliko krošnje. Kar 53 % dreves v vzorcu je imelo asimetrično krošnjo, v povprečju za 56 % širšo v smeri proti vrzeli. To lahko privede do večje ogroženosti za porušitev dreves, nastanek napak kot so kriva in ovalna debla, večvrhatost in ekscentričnost srca. In 2010, section 13 in the Trnovo forestry unit was thinned with a machine logging technology. After ten years, we assessed the characteristics of the gaps in the stand canopy that formed after thinning in beech pole stand. We measured tree canopy widths at the edges of the gaps created after thinning and analyzed the gaps based on laser scanning data from 2015 and orthophotos from 2020. Based on orthophotos, it was not possible to reliably determine the gap closure. From field measurements of canopy size, we conclude that trees develop an uneven canopy shape at the edges of the gap. As many as 53% of the trees in the sample had an asymmetrical canopy, averaging 56% wider toward the gap. This can lead to a greater risk of tree damage and formation of defects such as curved and oval trunks, multi-peakedness and eccentricity in the heart of tree. dinamika vrzeli/strojno redčenje/asimetrija krošenj gap dynamic/mechanized thinning/tree crown asimetry true false false [R. Bratkič] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2021-04-15 07:16:29 2021-04-15 07:16:40 2022-09-05 03:54:36 0000-00-00 00:00:00 2021 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*24:630*3:630*18(043.2)=163.6 191107 59758339 12615.pdf 12615.pdf 1 BA1FDD65E47B784636B2625DC363B5AF a6e1ff1fcb7069e716b30667692c526edf33116a44577c25346d5927ad9c4571 e10265bd-a1bb-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142187 Biotehniška fakulteta 0 0 0