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Notes: Incorporating Crown Ratio into Taper Equations for Loblolly Pine Trees

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Analyses were performed to ascertain the feasibility of incorporating crown ratio, with dbh and total height, into taper equations for loblolly pine trees from unthinned plantations. Crown ratio was related to the parameter estimates in a simple quadratic taper model, to the join points in a segmented taper model, and to a single taper coefficient. The reduction in the error sum of squares due to adding crown ratio after dbh and total height was slight, and it was concluded that, in many cases, the inclusion of crown ratio as a predictor variable would not be warranted. Forest Sci. 31:478-484.

Keywords: Pinus taeda; form; regression analysis; volume

Document Type: Miscellaneous

Affiliations: Inventory Analyst with Weyerhaeuser Company in Tacoma, Washington

Publication date: June 1, 1985

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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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