Analiza vetroloma na Območju Črnivca leta 2008

diplomsko delo - univerzitetni študij

Andrej Pahovnik (Author), Andrej Bončina (Mentor)

Abstract

Leta 2008 je viharni veter v osrednji Sloveniji na območju 20.000 ha poškodoval več kot 500.000 m3 lesne mase, popolnoma uničenih je bilo 700 ha gozdov. Raziskava je bila omejena na območje prelaza Črnivec (GGE Gornji Grad,GGO Nazarje). S 320 stalnih vzorčnih ploskev (SVP) se je z multivariatnimi metodami in logistično regresijo analiziralo podatke o drevju in gozdnih sestojih. Želelo se je ugotoviti, katere rastiščne in sestojne značilnosti vplivajo na obseg in stopnjo poškodovanosti sestojev in podati priporočila, kako pri gospodarjenju z gozdovi zmanjšati tveganja zaradi vpliva močnih vetrov. Podatki s SVP in drugo gradivo (sestojna karta, aerofoto posnetki, karta poškodovanosti) so bili dobljeni na Zavodu za gozdove Slovenije, Območna enota Nazarje. V model pojava vetroloma je bilo vključenih sedem od sedemindvajsetih spremenljivk: nadmorska višina, lega, naklon, lesna zaloga smreke, jelke in bukve ter matična podlaga. Med njimi je bila najpomembnejša matična podlaga, saj se na silikatni matični podlagi verjetnost pojava vetroloma zmanjša za količnik 0,37. Pomemben dejavnik je bila tudi lega, saj je verjetnost pojava vetroloma 1,48-krat višja na privetrni strani kot na zavetrni. Rezultati tudi kažejo, da je stopnja poškodovanosti sestojev z večjo primesjo listavcev znatno nižja.

Keywords

vetrolomi;gozdovi;motnje;vplivni dejavniki;odpornost sestojev;

Data

Language:	Slovenian
Year of publishing:	2011
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[A. Pahovnik]
UDC:	630*42(043.2)=163.6
COBISS:	3294118
Views:	1005
Downloads:	402
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Analysis of windthrow on Crnivec saddle range in year 2008
Secondary abstract:	In the year 2008 the stormy wind in central Slovenia destroyed more than 500,000 m3 of wood mass at an area of 20,000 hectares. 700 hectares of forests were completely destroyed. This research focuses on the mountain pass Črnivec area (the forest economic unit Gornji Grad in the forest economic area Nazarje). 320 permanent sample plots (PSP) were analysed with multi-version methods and logistic regression to collect data on trees and forest stands. The aim was to find out which characteristics of sites and stands have influence on the scale and level of damage on stands, as well as give recommendations concerning the reduction of high winds hazard in forest management. The data from PSP and other material (stand map, air photos, damage map) was obtained from the Slovenian Forest Service, regional unit Nazarje. The windfall occurrence model includes seven of twenty-seven variables: altitude, location, incline, wood stock of spruce, fir and beech, and bedrock. The most important among them is the bedrock, since the chance of windfall decreases for a quotient of 0.37 on a silicate ground. Another important factor is the location; the chance of windfall is 1.48 higher at the windward side then at the leeward side. The results show that the damage level on stands with more deciduous trees is far lower.
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Biotehniška fak., Odd. za gozdarstvo in obnovljive gozdne vire
Pages:	VII, 38 f.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;agriculture and related sciences and techniques;forestry;farming;wildlife exploitation;kmetijstvo ter sorodne vede in tehnologije;forestry;gozdarstvo;forest injuries and protection;poškodbe in varstvo gozdov;
ID:	1447691