Analiza preživetja in okrevanja dreves po žledolomu

diplomsko delo - visokošolski strokovni študij - 1. stopnja

Alen Novak (Author), Dušan Roženbergar (Mentor)

Abstract

Analizirali smo preživetje in okrevanje dreves po žledolomu, ki se je zgodil med 30. januarjem in 10. februarjem 2014. Analizo smo izvedli 9 vegetacijskih dob po žledolomu, ter primerjali nekatere rezultate z analizo, ki je bila izvedena 3 vegetacijske dobe po omenjeni ujmi. Na dveh različnih lokacijah po Sloveniji, kjer so že bile izvedene meritve leta 2017, smo na vsaki lokaciji v več vzporednih transektih postavili 20 raziskovalnih ploskev. Skupno smo analizirali 406 dreves. V analizo so bile uvrščene 4 drevesne vrste in sicer: bukev, gorski javor, graden in pravi kostanj. Ugotovili smo, da se je v primerjavi z letom 2017 mortaliteta povečala in sicer pri bukvi za 3,7 %, gorskemu javorju za 3,6 %, pravemu kostanju za 2,4 % ter gradnu za 16,7 %. Z večanjem prsnega premera se je mortaliteta zmanjševala, prav vsa odmrla drevesa pa so enako, kot pri popisu iz leta 2017 imela več kot 75 % poškodovane krošnje. Ugotovili smo tudi, da se je številčnost epikormskih poganjkov na deblu pri drevesih v povprečju zmanjšala, v krošnji pa povečala, ter da se je dolžina poganjkov povečala tako na deblu kot v krošnji. Vpliva stopnje poškodovanosti na odganjanje na deblu nismo zaznali, ugotovili pa smo, da so drevesa z manjšimi poškodbami imela večjo jakost odganjanja poganjkov v krošnji.

Keywords

žledolom;ujme;mortaliteta;epikormski poganjek;odganjanje;

Data

Language:	Slovenian
Year of publishing:	2023
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[A. Novak]
UDC:	63023:63042(043.2)=163.6
COBISS:	164255235
Views:	11
Downloads:	2
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Analysis of the survival and recovery of trees after an ice storm
Secondary abstract:	Tree survival and recovery was analyzed after the ice storm that occurred between January 30 and February 10, 2014. The analysis was conducted nine growing seasons after the ice storm, and we compared some of the results with analyzes conducted three growing seasons after the ice storm. At two different sites in Slovenia, where measurements had already been made in 2017, we had established 20 research plots in several parallel transects at each site. In total, we analyzed 406 trees. During the analysis, 4 tree species were studied: European beech, sycamore maple, sessile oak, and a sweet chestnut. We found that compared to 2017, mortality had increased by 3.7 % for beech, 3.6 % for sycamore maple, by 2.4 % for sweet chestnut, and 16.7 % in sessile oak. Mortality then decreased with increasing breast diameter, and all trees that died during the last census had > 75 % crown damage. We had also found that the frequency of epicormic shoots decreased on the trunk of sampled trees and increased in the crown. Additionally, the length of the shoots increased both on the trunk and in the crown. We did not detect any effect of damage level on epicormic sprouting on the trunk, but we did find that trees with lower levels of damage had higher levels of epicormic sprouting in the crown.
Secondary keywords:	ice storm;natural disaster;mortality;epicormic sprout;repulsion;
Type (COBISS):	Bachelor thesis/paper
Study programme:	0
Thesis comment:	Univ. v Ljubljani, Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire
Pages:	1 spletni vir (1 datoteka PDF (VII, 44 str.))
ID:	19929384