Crown-Diameter Prediction Models for 87 Species of Stand-Grown Trees in the Eastern United States

By W. Bechtold. 2003

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Forest Growth and Yield Modeling (2011, methodology): “Bechtold (2003) discovered that a bioclimatic index was statistically significant in over one-third of the species in his analysis, but the inclusion of the index only increased the R2 by less than 1% in most cases.”
Multi-sensor data fusion for estimating forest species composition and abundance in northern Minnesota (2011, background): “Moreover, while crown properties including LC and live crown ratio (HT/LC) are used to gauge growth of white pine saplings (O'Connell & Kelty, 1994) or calculate optimum stocking levels amongmature stands (Bechtold, 2003; Jordan & Ducey, 2007), LC as uniquely large for white pine is notmentioned.”
Local Models for Forest Canopy Cover with Beta Regression (2007, methodology): “The first approach is to utilize the strong correlation between stem DBH and crown diameters (e.g. Ilvessalo 1950, Muinonen 1995, Gill et al. 2000, Bechtold 2003) and build models that predict the area covered by each crown.”