The Relationship of Leaf Area and Foliage Biomass to Sapwood Conducting Area in Four Subalpine Forest Tree Species
Leaf dry weight and area were strongly correlated with sapwood area measured at 1.37 m, but leaf area per unit sapwood area varied widely among species: 1.88 m²·cm-2 for subalpine fir, 0.72 for Engelmann spruce, 0.44 for lodgepole pine, and 0.19 for aspen. The leaf area: sapwood area relationship was nearly constant for different portions of the crown, although the relationship was erratic in subalpine fir. Thus the upper portion of a larger tree has the same leaf area: sapwood area ratio as the entire crown of a smaller tree. This supports the hypothesis that a physiological balance exists between conducting tissue and the water requirements of the shoot. Forest Sci. 27:477-482.
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Document Type: Journal Article
Affiliations: Principal Hydrologist, USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, 240 W. Prospect St., Fort Collins, CO 80526
Publication date: 1981-09-01
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Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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