A New Whole-Stand Model for Unmanaged Loblolly and Slash Pine Plantations in East Texas

Author: Coble, Dean W.

Source: Southern Journal of Applied Forestry, Volume 33, Number 2, May 2009 , pp. 69-76(8)

Publisher: Society of American Foresters

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Abstract:

A new compatible whole-stand growth-and-yield model to predict total tree cubic-foot volume per acre yield (outside and inside bark) was developed for unmanaged loblolly pine (Pinus taeda) and slash pine (Pinus elliottii) plantations in East Texas. This model was compared with the noncompatible whole-stand model of Lenhart (<xref ref-type="bibr" rid="B15-2127">Lenhart, 1996</xref>, Total and partial stand-level yield prediction for loblolly and slash pine plantations in east Texas, South. J. Appl. For. 20(1):36-41) and the <xref ref-type="bibr" rid="B15-2127">Lenhart (1996)</xref> model refit to current data. For the two species, all three models were evaluated with independent observed data. The model developed in this study outperformed both Lenhart models in prediction of future yield and basal area per acre for all age classes combined and by 5-year age classes. The Lenhart models consistently overestimated yield and basal area per acre. All three models predicted surviving trees per acre similarly. An example is also provided to show users how to use the new whole-stand model.

Keywords: Pinus taeda; Pinus elliotti; compatible growth-and-yield models; Schumacher yield model

Document Type: Research article

Publication date: 2009-05-01

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