Rok Čarman (Author), Andrej Smrekar (Author), Aleš Kadunc (Author), Marijan Kotar (Author)

Abstract

V nalogi smo preizkusili dve metodi za izračun volumna in površine krošenj pribukvi in smreki. Prva metoda temelji na pripomočku, imenovanem krošnjemer, s pomočjo katerega smo volumne in površine krošenj izračunali po sekcijah, druga pa na izračunu volumnov in površin krošenj na osnovi geometrijskih teles. V vzorec smo zajeli 60 dreves bukve in 40 dreves smreke. Ugotovili smo velika odstopanja v izračunih, predvsem pri bukvi v sončni krošnji. Pri smrekise izračuni bolje ujemajo. Kazalci oblike krošnje se z debelino dreves večinoma spreminjajo. Pri ugotavljanju odvisnosti med debelinskim prirastkom in parametri krošnje smo ugotovili, da pri bukvi senčna krošnja pomembneje vpliva na debelinski prirastek, kot pa sončna krošnja, pri smreki pa je ravno nasprotno.

Keywords

krošnjemer;oblika krošnje;volumen krošnje;površina krošnje;Fagus sylvatica L.G;Picea abies (L.) Karst.;

Data

Language: Slovenian
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
Publisher: Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije
UDC: 630*53--017(045)=163.6
COBISS: 2162086 Link will open in a new window
ISSN: 0017-2723
Parent publication: Gozdarski vestnik
Views: 908
Downloads: 209
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Other data

Secondary language: English
Secondary title: Determination of crown size and shape using crown window
Secondary abstract: We tested two methods for measuring the volume and surface of beech and sprucetree crowns. The first method is based on an instrument called crown window, by means of which the volumes and surfaces of crowns were measured in sections, whereas the measurement according to the other method is based on geometric shapes. The sample comprised 60 beech and 40 spruce trees. We found major discrepancies in the measurements, especially with the sunny part of thebeech tree crown. The measurements tally to a greater extent with the spruce tree. Indicators of the shape of the crown mainly change with the thickness of the tree. When establishing the dependence of the increment on the crown parameters, we realized that with the beech tree the sunny crown more strongly affects the increment than the shady part of the crown, whereas it is just the opposite with the spruce tree.
Secondary keywords: crown window;crown shape;crown volume;crown surface;
URN: URN:NBN:SI
Type (COBISS): Scientific work
Pages: str. 83-94
Volume: ǂLetn. ǂ66
Issue: ǂšt. ǂ2
Chronology: 2008
ID: 1735424