Dinamika vrzeli v bukovih drogovnjakih po redčenju s strojno sečnjo

diplomsko delo - visokošolski strokovni študij - 1. stopnja

Rok Bratkič (Author), David Hladnik (Mentor)

Abstract

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.

Keywords

dinamika vrzeli;strojno redčenje;asimetrija krošenj;

Data

Language:	Slovenian
Year of publishing:	2021
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[R. Bratkič]
UDC:	63024:6303:630*18(043.2)=163.6
COBISS:	59758339
Views:	348
Downloads:	44
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Gap dynamics in beech polewood stands after thinning with CTL technoloy
Secondary abstract:	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.
Secondary keywords:	gap dynamics;mechanized thinning;tree crown asimetry;
Type (COBISS):	Bachelor thesis/paper
Study programme:	0
Thesis comment:	Univ. v Ljubljani, Biotehniška fak., Oddelek za gozdarstvo in obnovljive gozdne vire
Pages:	VII, 25 f.
ID:	12779658