Quantitative and qualitative assessment of timber harvesting residues: a case study of a balsa plantation in Papua New Guinea

Mohammad R Ghaffariyan; Braden Jenkin; Richard Mitchell; Mark W Brown

doi:10.1080/00049158.2015.1092627

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Quantitative and qualitative assessment of timber harvesting residues: a case study of a balsa plantation in Papua New Guinea

Journal article

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Quantitative and qualitative assessment of timber harvesting residues: a case study of a balsa plantation in Papua New Guinea

Mohammad R Ghaffariyan, Braden Jenkin, Richard Mitchell and Mark W Brown

Australian Forestry, Vol.79(1), pp.25-31

2016

DOI: https://doi.org/10.1080/00049158.2015.1092627

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Abstract

plantations

harvesting

residues

nutrients

moisture content

balsa

The quantity and quality of the harvesting residues in a balsa plantation in East New Britain Province of Papua New Guinea are reported in this paper. The plantation was harvested manually with a chainsaw and manpower to extract the industrial wood at age 6 years. A modified standard harvesting residue assessment method using plots on line transects was applied. The total weight of the harvest residues remaining on the site after wood extraction was 211.7 tGREEN ha-1 (tonnes (green) per hectare). The major component was un-merchantable stem wood (121.3 tGREEN ha-1; 57.3%), followed by bark (59.3 tGREEN ha-1; 28.0%). This level of harvest residue was relatively greater than that reported in other studies, reflecting the combination of the log specification applied and the nature of the stem defects in balsa trees. The level of residues indicates the possibility of additional woody material recovery for bioenergy after consideration of sustainability issues. The average moisture content of the wood components of the residues was determined over two days. The average moisture content on the first day after harvesting was 50%, falling in the following day to about 48%. The abundance of five elements in the harvest residues was estimated using data from a single sample tree; of the elements assessed potassium was the most abundant while calcium was the least.

Details

Title: Quantitative and qualitative assessment of timber harvesting residues: a case study of a balsa plantation in Papua New Guinea
Authors: Mohammad R Ghaffariyan (Author) - University of the Sunshine Coast - Faculty of Arts, Business and Law
Braden Jenkin (Author) - Sylva Systems Pty Ltd
Richard Mitchell (Author) - University of the Sunshine Coast - Faculty of Arts, Business and Law
Mark W Brown (Author) - University of the Sunshine Coast - Faculty of Arts, Business and Law
Publication details: Australian Forestry, Vol.79(1), pp.25-31
Publisher: Taylor & Francis Australasia
Date published: 2016
DOI: 10.1080/00049158.2015.1092627
ISSN: 0004-9158
Organisation Unit: Tropical Forests and People Research Centre; University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute
Language: English
Record Identifier: 99449374902621
Output Type: Journal article

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