Claim · model-written summary
Forwarders produced 7.8 raw tonnes per hour on average.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Verbatim
e0“the forwarders’ average productivity was 7.8 raw tonnes per hour”
t0“tree size”
Title
Productivity of integrated harvesting of pulpwood and energy wood in first commercial thinnings
Robert Andersson Epsilon Archive for Student Projects (University of Southampton) 2011
Other claims from this paper (19)
- Observation Mean stem density before harvest was 2578 stems per ha.
- Observation Mean stem volume before harvest was 0.074 m3solid over bark.
- Observation On average 1518 stems per hectare were harvested.
- Observation Mean harvested tree size was 0.077 m3s.
- Observation Basal area removal was 11m2/ha.
- Observation Biomass removal was 59 raw tonnes /ha.
- Observation Pulpwood removal was 41.2 raw tonnes.
- Observation Energy wood removal was 17.9 raw tonnes.
- Observation The thinning left 1064 stems per hectare.
- Observation Residual mean stem volume was 0.105 m3 solid over bark.
- Observation Residual mean whole tree volume was 0.129 m3 solid over bark.
- Observation Harvesters produced 5.1 raw tonnes per hour on average.
- Observation Harvesters cut 128 stems per hour on average.
- Observation Mean forwarding distance was 294 m.
- Observation Harvester total time was 363 hours, 14.3 hours per hectare, and 0.23 hours per ton.
- Observation Forwarder total time was 216.5 hours, 8.7 hours per hectare, and 0.15 hours per ton.
- Observation Average harvester cost was 1247 €/ha.
- Observation Average forwarder cost was 758 €/ha and total cost was 2005 €/ha.
- Association Preharvest stem density affected harvester productivity, while biomass harvested was related to cost per tonne.