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The relationship between tree height and leaf area: sapwood area ratio
Oecologia, 2002The leaf area to sapwood area ratio (A l:A s) of trees has been hypothesized to decrease as trees become older and taller. Theory suggests that A l:A s must decrease to maintain leaf-specific hydraulic sufficiency as path length, gravity, and tortuosity constrain whole-plant hydraulic conductance.
N, McDowell +12 more
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Trees, 2006
Spatial variation in sapwood area to leaf area ratio (Huber value, HV) and specific leaf area (SLA) was examined in branches of closed-canopy trees of silver birch (Betula pendula Roth). HV increased basipetally within a crown and decreased with increasing branch order, but exhibited no significant radial trend along a primary branch.
Arne Sellin, Priit Kupper
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Spatial variation in sapwood area to leaf area ratio (Huber value, HV) and specific leaf area (SLA) was examined in branches of closed-canopy trees of silver birch (Betula pendula Roth). HV increased basipetally within a crown and decreased with increasing branch order, but exhibited no significant radial trend along a primary branch.
Arne Sellin, Priit Kupper
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Leaf area ratio and net assimilation rate of 24 wild species differing in relative growth rate
Oecologia, 1990Which factors cause fast-growing plant species to achieve a higher relative growth rate than slow-growing ones? To answer this question 24 wild species were grown from seed in a growth chamber under conditions of optimal nutrient supply and a growth analysis was carried out.
Hendrik, Poorter, Carlo, Remkes
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Climate influences the leaf area/sapwood area ratio in Scots pine
Tree Physiology, 1995We tested the hypothesis that the leaf area/sapwood area ratio in Scots pine (Pinus sylvestris L.) is influenced by site differences in water vapor pressure deficit of the air (D). Two stands of the same provenance were selected, one in western Scotland and one in eastern England, so that effects resulting from age, genetic variability, density and ...
M, Mencuccini, J, Grace
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A leaf area – sapwood area ratio developed to rate loblolly pine tree vigor
Canadian Journal of Forest Research, 1985Stem cross-sectional sapwood area was linearly related to leaf area in loblolly pine. A better relationship was obtained using cross-sectional sapwood area taken at crown base than at breast height. The relationship was affected by time of sampling, with time of maximum needle biomass giving the best correlation.
C. A. Blanche +2 more
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Comparison of forest Leaf Area Index retrieval based on simple ratio and reduced simple ratio
2010 18th International Conference on Geoinformatics, 2010Leaf Area Index (LAI) is an essential parameter for process-based ecological and climate models. Spectral vegetation indices calculated from remote sensing data are widely used for LAI retrieval at large scales. The applicability of two vegetation indices, namely Simple Ratio (SR) and Reduced Simple Ration (RSR), for retrieving LAI at Maoershan ...
Gaolong Zhu +5 more
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Leaf/sapwood area ratios in Scots pine show acclimation across Europe
Canadian Journal of Forest Research, 2001We tested the hypothesis that leaf/sapwood area ratios (S) in Scots pine (Pinus sylvestris L.) differ across Europe. Data from published records were collected and critically reviewed, and five new sites were studied to increase the overall sample size available for analyses.
Maurizio Mencuccini, Lorenzo Bonosi
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LEAF AREA RATIOS FOR SELECTED RANGELAND PLANT SPECIES
1992(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Weltz, Mark A +2 more
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The influence of thinning and tree size on the sapwood area / leaf area ratio in coigue
Canadian Journal of Forest Research, 2005The effect of thinning and crown class on the projected leaf area, specific leaf area, and projected leaf area / sapwood area ratio was evaluated in a 48-year-old even-aged stand of coigue (Nothofagus dombeyi (Mirb.) Oerst.). The data were collected through destructive sampling of 27 trees and analyzed with analysis of variance and regression models ...
Pablo A Gajardo-Caviedes +3 more
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