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Microwave Attenuation as an Indicator of Sampling Weight of Herbaceous and Woody Plants in the Field

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Abstract:

Attenuation of microwave signals was linearly related to the weight of herbaceous plants and woody shoots < 1.27 cm diameter along the transmission path in spruce-fir, northern hardwood, and mixed-wood stands. Hand-held instrumentation gave results equal to those obtained when rigid mounts were used. Signal loss was more closely related to green weight of vegetation in hardwood stands and to dry weight in softwood stands. Signal loss also was linearly related to annual growth of herbaceous and broadleaf woody vegetation. Forest Sci. 29:726-734.

Keywords: Spruce-fir; electronic measurement; mixed wood; northern hardwood

Document Type: Journal Article

Affiliations: Professor, Electrical Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

Publication date: 1983-12-01

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.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 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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