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Title:Meritve sončnega sevanja v gozdu - II. Metode na osnovi projekcij hemisfere neba in krošenj
Authors:ID Diaci, Jurij (Author)
ID Thormann, Jean-Jacques (Author)
ID Kolar, Uroš (Author)
Files:.pdf PDF - Presentation file, download (1,53 MB)
MD5: 51EEE84F992A8FA059CA10238E3CCEEB
PID: 20.500.12556/dirros/c2ff0def-247a-4403-9d85-0d70fc7c00f3
 
Language:Slovenian
Typology:1.01 - Original Scientific Article
Organization:Logo SciVie - Slovenian Forestry Institute
Abstract:Poznavanje porazdelitve sevanja v gozdu je pomembno za temeljna ekolo{ka prou~evanja in za prakso gojenja gozdov. V ~lanku primerjamo tri metode ocenjevanja son~nega sevanja na osnovi preslikave svoda neba in kro{enj: fotografijo hemisfere z objektivom "ribje oko", horizontoskop in LAI-2000 Plant Canopy Analyzer. Prikazujemo izku{nje, izbolj{ave metod ter na~rt za podstavek horizontoskopa, ki smo ga razvili na Katedri za gojenje gozdov. Izbolj{ani stabilni horizontoskop daje, z nekaterimi omejitvami, povsem zadovoljive rezultate za neposredno gojitveno delo. Fotografija hemisfere je primerna za oceno svetlobnih razmer v vseh tipih sestojev in je zato uporabna pri raziskovalnem delu. V zadnjem ~asu se metoda intenzivno razvija. Digitalizacija celotnega sistema bo pospe{ila standardizacijo. Instrument LAI-2000 je posebej primeren za raziskave pomlajevanja v razmerah bujne zeliščne vegetacije na bogatih rastiščih in v spremenjenih sestojih.
Keywords:sončno sevanje, meritve sevanja, gojenje gozda, fotosinteza, fotosintetsko aktivno sevanje, fotosintetsko uporabno sevanje, pretok energije, gozd, fotografija, hemisfera, horizontoskop, direktno sevanje, difuzno sevanje
Publication status:Published
Publication version:Version of Record
Year of publishing:1999
Number of pages:str. 177-210
Numbering:Vol. 60
PID:20.500.12556/DiRROS-7425 New window
UDC:630
ISSN on article:0351-3114
URN:URN:NBN:SI:doc-PP2W3R8E
COBISS.SI-ID:605094 New window
Publication date in DiRROS:12.07.2017
Views:4476
Downloads:1851
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Record is a part of a journal

Title:Zbornik gozdarstva in lesarstva. forest and wood science & technology
Shortened title:Zb. gozd. lesar.
Publisher:Gozdarski inštitut Slovenije, Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire, Biotehniška fakulteta, Oddelek za lesarstvo
ISSN:0351-3114
COBISS.SI-ID:6206978 New window

Secondary language

Language:English
Abstract:The know-how in the field of solar radiation distribution in forests is important for basic ecological investigations and silvicultural practice. Three methods of solar radiation assessment based on hemispherical canopy photography are compared in the present article: a hemispherical photography by means of a fish-eye lens, a horizontoscope and the ALI-2000 Plant Canopy Analyzer. Experiences, improved methods and a drawing of a horizontoscope stand which was elaborated at the Chair of Silviculture are presented. Fairly good results with some limitations can be achieved with the improved stable horizontoscope in silvicultural work. Hemispherical photography is appropriatefor the assessment of light conditions in all stand types and can thus be used in research work. The method has recently been undergoing intensive development. Digitalization of the entire system will speed up standardization. The ALI-2000 instrument is highly suitable for regeneration research in conditions of abundant plant vegetation, in reach sites and modified stands.
Keywords:solar radiation, radiation measurement, silviculture, photosynthesis, photosynthetically active radiation, photosynthetically usable radiation


Collection

This document is a part of these collections:
  1. Acta Silvae et Ligni

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