Weight and green density of oak pulpwood harvested from the selected stands of Łąck Forest Inspectorate
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2015, Vol 91, Issue
Abstract
Weight and green density of oak pulpwood harvested from the selected stands of Łąck Forest Inspectorate. The paper presents the results of a pilot study the aim of which was to define the actual weight of oak pulpwood. The average weight of a single log with bark is 23,3 kg (0,025 m3). By dividing the total weight of the green wood material in bark (16194,2 kg) by the total log volume with bark (17,2 m3) one gets a result equaling around 942 kg per 1 m3. The study was carried out in two forest stands located in the area of Łąck Forest Inspectorate (Regional State Forest Directorate in Łódź) where some forest maintenance work had been planned. From among the measured trees, i.e. intended to be cut down as part of the planned forest maintenance (late thinning), 30 trees were selected by Draudt dendrometric method (90 trees were selected in total). 1,2 m long specimens were obtained out of the trunks of the cut down model trees. A number of statistically significant relations was observed between the analyzed characteristics. The relation between weight and log volume and diameter is much stronger than between weight and density. With the increase of diameter, we also observed an increase in log volume and weight, whereas to the density decreased. In case of oak and probably other ring-porous timber species, it is wood density that largely influences the weight of the material at small dimensions. It differs from the coniferous trees in a way that the weight of the top part of the coniferous trees is influenced mostly by moisture.
Authors and Affiliations
Arkadiusz Tomczak, Tomasz Jelonek, Marcin Jakubowski, Radosław Wąsik, ADRIAN JASZCZAK
Keywords
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