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Evaluation of Two Methods for Cubic-Volume Prediction of Loblolly Pine to Any Merchantable Limit

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This study compares two methods of estimating merchantable volumes to specified top diameter or height limits. The prediction models evaluated were (1) volume ratio models that give the ratios of merchantable to total volume, and (2) taper equations that when integrated provide volume estimates of any segment of the bole. Data from plantations and natural stands of loblolly pine were used to compare the models for ability to predict merchantable volumes. Additional evaluations were made to compare taper equations. Results showed that the choice of the model depends on the objective. Two sets of volume ratio models are recommended for predicting merchantable volumes, whereas a new taper equation is found to estimate consistently well both volumes and diameters. Forest Sci. 26:71-80.
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Keywords: Pinus taeda; mensuration; taper equation

Document Type: Journal Article

Affiliations: Mathematical Statistician in the Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, Portland, OR 97208

Publication date: 1980-03-01

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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.
    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
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