Journal
FOREST ECOLOGY AND MANAGEMENT
Volume 260, Issue 9, Pages 1613-1622Publisher
ELSEVIER
DOI: 10.1016/j.foreco.2010.08.014
Keywords
Competition; Density management; Relative density
Categories
Funding
- National Science Foundation
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Quantifying stand density is important for accurate prediction of net biomass and carbon accumulation, for estimating growth and mortality risks of trees, stands, and regions, and for the management of forests for multiple goods and services. Building on previous work relating maximum stand density to wood specific gravity, we develop a stand density equation for the mixed species forests of the northeastern United States using data from the US Forest Service, Forest Inventory and Analysis program. We used quantile regression, in concert with a quantile selection and evaluation procedure, to ensure conformity between our density measure and previously developed guidance for well-studied stand types. The resulting strictly additive relative density measure appears to provide reasonable prediction of maximum density even for plantations of exotic conifers in the region. The results suggest that maximum stand densities after accounting for wood specific gravity may be lower in northeastern North America than in the south or west. (C) 2010 Elsevier B.V. All rights reserved.
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