Priraščanje smreke v odvisnosti od rastnih razmer na Jelovici in Pokljuki

diplomsko delo - visokošolski strokovni študij - 1. stopnja

Nejc Papler (Author), Aleš Kadunc (Mentor)

Abstract

V diplomski nalogi je analizirano priraščanje smreke (Picea abies) glede na starost, utesnjenost krošenj in rastne razmere na območju Pokljuke in Jelovice. V ta namen je bilo postavljenih 18 ploskev. Na vsakem izmed analiziranih dreves je bil odvzet izvrtek na prsni višini (1,3 m od tal), in sicer za prirastek v zadnjih 30 letih. Petim dominantnim drevesom na vsaki ploskvi pa je bil odvzet izvrtek do stržena. Rezultati so pokazali, da med razvojnimi fazami pri debelinskem prirastku praktično ni razlik in da se tudi odrasla smreka (debeljaki) odziva na redčenje s povečanim prirastkom. Za nobeno razvojno fazo kot tudi za vse smreke strehe sestoja nismo ugotovili razlik v debelinskem prirastku pri različni utesnjenosti. Prav tako so rezultati pokazali, da tekoči volumenski prirastek sestoja upada linearno glede na sklep sestoja in da se s starostjo odzivnost temeljničnega prirastka glede na jakost konkurence celo povečuje.

Keywords

debelinski prirastek;temeljnični prirastek;krošnje;konkurenca;smreka;Picea abies;Jelovica;Pokljuka;

Data

Language:	Slovenian
Year of publishing:	2014
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[N. Papler]
UDC:	63052:63017(497.4)(043.2)=163.6
COBISS:	3930278
Views:	471
Downloads:	108
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Norway spruce increment in dependence on growth conditions on Jelovica in Pokljuka
Secondary abstract:	This undergraduate thesis analyses the increment of Norway spruce (Picea abies) depending on age, canopy density and growth conditions in the Pokljuka and Jelovica area. In order to do this we set up 18 research plots. Each of the analysed trees was bored at breast height (1.3 m from the ground) to analyse the growth in the last 30 years. Five dominant trees per plot, on the other hand, had a sample taken to the pith. The results showed that there are hardly any differences between the developmental phase regarding diameter increment and that adult spruces (mature tree stands) respond to thinning by increasing growth, as well. There were no differences in the diameter increment for varying degrees of crown density in any of the developmental phases or for the whole stand canopy population. The results also demonstrated that the current increment in the volume of the stands decreases linearly depending on the density of the tree canopy stand and that the responsiveness of the basal area increment on the degree of competition from other trees actually increases with age.
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Ljubljani, Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire
Pages:	39 str.
ID:	11522575