Density is one of the most basic quality traits, influential for wood processing and most applications. The aim of this paper has been to present a mathematical model for dry density variation along spruce stems. 85 mature spruce trees were sampled from afforestation plantations at the west coast region of Norway. 20 mm wide cubes of clear wood were extracted from the pith outwards in north and south directions at 10 equidistant heights along the trunk. Green and dry weight and volume were recorded. In this way, the 85 stems yielded 523 disks and a total of 6019 valid observation sets.
Keywords: Wood waste recycling, MDF, Biological process
Authors
Gjerdrum P.
Section Wood Technology, Norwegian Forest and Landscape Institute, Aas
Eikenes B.
Department of Ecology and Natural Resource Management, Norwegian University of Life Sciences, Aas
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