Claim · model-written summary
Chainsaw harvesting had light use efficiency 0.7 versus 0.57 g MJ−1 after Feller Buncher harvesting.
- Taxon
- Eucalyptus
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Eucalyptust0 - Treatment
- chainsawe0
- Outcome
- light use efficiencye0
- Direction
- higherinferrede0
- Value
- 0.7e0
- Qualifier
- 0.57 g MJ−1e0
- Comparator
- Feller Buncher clear cute0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“Leaf area index and light use efficiency at the end of rotation were impacted by the clear-cut method, with an average of 3.3 and 2.1 m² m−2, and 0.7 and 0.57 g MJ−1 for chainsaw and Feller Buncher clear cut, respectively”
t0“Eucalyptus”
Title
Legacy of harvesting methods on coppice-rotation Eucalyptus at experimental and operational scales
Rodrigo E. Hakamada; Gabriela G. Moreira; Pietro Gragnolati Fernandes; et al. Trees Forests and People 2022. doi:10.1016/j.tfp.2022.100293
Other claims from this paper (12)
- Intervention effect Harvest treatments strongly affected height and volume growth, with a smaller effect on diameter.
- Intervention effect Mechanized harvesting reduced mean annual increment by 33% versus chainsaw harvesting.
- Intervention effect Stump height did not influence growth after chainsaw clear cutting.
- Intervention effect Low stumps after Feller Buncher harvesting reduced growth by 23% versus high stumps.
- Intervention effect Stump cleaning increased survival only in semi-mechanized harvesting.
- Intervention effect Stump cleaning did not produce a yield difference.
- Intervention effect Chainsaw harvesting had leaf area index 3.3 versus 2.1 after Feller Buncher harvesting.
- Observation Intact stumps, stand uniformity, light capture and light use efficiency had reported r-squared values of 67%, 55%, 60% and 86%, respectively.
- Intervention effect At operational scale, Feller Buncher harvesting had lower MAI than chainsaw harvesting, 37 versus 44 m³ ha−1 y−1.
- Intervention effect Feller Buncher harvesting lowered survival to 88% versus 96% after chainsaw harvesting.
- Intervention effect Feller Buncher harvesting lowered stand uniformity.
- Recommendation Coppice systems should account for harvest operation costs and efficiencies because they affect subsequent survival and production.