Integrated biomass harvesting system is one of the conventional biomass utilisation methods applied in Australian pine plantations. This project studied the productivity-cost and yield of this harvesting system in 32 years old Pinus radiata plantations located in South West Western Australia. The harvesting systems consisted of a harvester and a forwarder. There were two study treatments; control plot (extracting saw log and chip wood) and fibre-plus plot (integrated sawlog, chip wood and fibre-plus (residue logs as source of biomass)). In the integrated biomass harvesting plot, 36.6 GMt/ha of Fibre-plus materials were utilised in addition to the normal sawlog and chip wood volumes. Extracting additional biomass materials reduced the productivity of the forwarder and increased the cost of extraction (2.7 $/GMt) compared to the control plot (2.2 $/GMt) but the harvester's productivity and cost did not change highly in both plots. DBH was significant factor influencing the working time of harvester while load volume, extraction distance and extraction type (sawlog, chip wood, chip wood and Fibre-plus) significantly impacted forwarding time. Additional biomass recovery in the Fibre-plus plot resulted in less residues left on the site (103.2 GMt/ha) than control plot (144.2 GMt/ha).
Integrated biomass and timber harvesting in pine plantations in Western Australia
Spinelli R;Magagnotti N;
2016
Abstract
Integrated biomass harvesting system is one of the conventional biomass utilisation methods applied in Australian pine plantations. This project studied the productivity-cost and yield of this harvesting system in 32 years old Pinus radiata plantations located in South West Western Australia. The harvesting systems consisted of a harvester and a forwarder. There were two study treatments; control plot (extracting saw log and chip wood) and fibre-plus plot (integrated sawlog, chip wood and fibre-plus (residue logs as source of biomass)). In the integrated biomass harvesting plot, 36.6 GMt/ha of Fibre-plus materials were utilised in addition to the normal sawlog and chip wood volumes. Extracting additional biomass materials reduced the productivity of the forwarder and increased the cost of extraction (2.7 $/GMt) compared to the control plot (2.2 $/GMt) but the harvester's productivity and cost did not change highly in both plots. DBH was significant factor influencing the working time of harvester while load volume, extraction distance and extraction type (sawlog, chip wood, chip wood and Fibre-plus) significantly impacted forwarding time. Additional biomass recovery in the Fibre-plus plot resulted in less residues left on the site (103.2 GMt/ha) than control plot (144.2 GMt/ha).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
