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Variation in Maximum Leaf Area of Coniferous Forests in Oregon and Its Ecological Significance

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Maximum leaf areas (calculated for all surfaces) accumulated by 40 mature forest stands in western Oregon ranged from 5 to 53 m2m-2. Forests of the west-central Cascade Mountains had much more leaf area than forests in the eastern Siskiyou Mountains along the California border. In both regions, environmental analyses correlated high maximum leaf areas with moderate air and soil temperature and with adequate soil moisture. The Siskiyou Mountains, with a more continental climate than the Cascades, had generally lower leaf areas. There the greater evaporation in the summer and colder winter temperatures apparently restrict leaf area development more than in the Cascades. In both regions, nutritional limitations may restrict the leaf areas to considerably less than the potential afforded by local climatic conditions. Forest Sci. 24:131-140.
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Keywords: Biomass; environmental gradients; photosynthesis; respiration

Document Type: Journal Article

Affiliations: College of Forest Resources, University of Washington, Seattle, WA 98195

Publication date: 1978-03-01

More about this publication?
  • 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.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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