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Modelling the inter-tree variation of knot properties for Pinus sylvestris in Sweden

Björklund, Lars and Moberg, Lennart (1999). Modelling the inter-tree variation of knot properties for Pinus sylvestris in Sweden. Technical Report. Uppsala: (S), Sveriges lantbruksuniversitet. Studia forestalia Suecica ; 207
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Abstract

With the help of the Swedish Scots Pine Stem Bank, the variation of internal knot properties was studied between stems and stands in sections in which the vertical variation was small. By means of explanatory site, stand and tree variables, knot property models were developed to describe variation between and within stands. Much of the between stand variation, and the lesser part of the random tree variation, in knot size, knot length and knots per whorl, was accounted for. However, knot angle was difficult to predict. This probably largely depended both on genetic control of this property, and on the measurement error caused by the low longitudinal resolution of the computer tomography scanning technique employed. Individual tree measurements of variables stable over time, such as growth-ring width close to the pith and stem diameter at the height of the lowest dead branch, were highly significant, and were the most important explanatory variables.

Authors/Creators:Björklund, Lars and Moberg, Lennart
Title:Modelling the inter-tree variation of knot properties for Pinus sylvestris in Sweden
Series/Journal:Studia forestalia Suecica (0039-3150)
Year of publishing :1999
Number:207
Number of Pages:23
Place of Publication:Uppsala
Publisher:Swedish Univ. of Agricultural Sciences
ISBN for printed version:91-576-5957-5
ISSN:0039-3150
Language:English
Publication Type:Report
Refereed:No
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Product science > Wood fibre and forest products
Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Forestry
Keywords:knot angle, knot diameter, knot frequency, knot length, models, wood quality attributes, CT-scanning
URN:NBN:urn:nbn:se:slu:epsilon-1-99
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-1-99
ID Code:3012
Department:(S)
Deposited By: Aina Svensson
Deposited On:22 Jan 2007 00:00
Metadata Last Modified:02 Dec 2014 10:18

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