Claim · model-written summary
In trees with leaf area index below 3.0, stem surfaces increased canopy fAPAR by 10–40%.
- Taxon
- treese0
- Organ / stage
- stem surfacese0
- Outcome
- canopy fAPARe0
- Direction
- increasede0
- Value
- 10–40%e0
- Qualifier
- leaf area index (LAI) <3.0e0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSetting
Verbatim
e0“In trees with a leaf area index (LAI) <3.0, stem surfaces increased canopy fAPAR by 10–40%”
Title
SCALE DEPENDENCE OF ABSORPTION OF PHOTOSYNTHETICALLY ACTIVE RADIATION IN TERRESTRIAL ECOSYSTEMS
Gregory P. Asner; Carol A. Wessman; Steve Archer Ecological Applications 1998. doi:10.1890/1051-0761(1998)008[1003:sdoaop]2.0.co;2
Other claims from this paper (10)
- Association Standing grass litter absorbed almost as much PAR as green grass canopies.
- Recommendation Modeling of canopy radiation should account for absorption of PAR by nonphotosynthetic plant components.
- Observation Woody growth forms showed statistically comparable leaf reflectance and transmittance spectra across populations, species and functional types.
- Observation Grass spectral properties were statistically comparable between species and C3/C4 physiologies.
- Observation Tissue-level PAR absorption was statistically similar across species, genera, functional groups, growth forms and climatic regions.
- Association Measured leaf, woody stem and litter optical properties explained only a small proportion of variance in tree and grass canopy fAPAR.
- Association Nonphotosynthetic vegetation had a significant effect on canopy fAPAR.
- Association Extent and LAI of trees and grasses were the dominant controls on savanna landscape-level fAPAR, accounting for 60–80% of total variation.
- Association Leaf-level and other canopy-level factors individually explained only a small proportion of landscape fAPAR variance (<11%).
- Association Leaf-level and canopy-level factors together accounted for 20–40% of landscape fAPAR variation.