![Estimating D.B.H. [diameter at Breast Height] from Stump Diameters on Second-growth Douglas-fir PDF](https://books.google.com/books/content/images/frontcover/XXIuXkdp0scC?fife=w80-h100)
Author: Robert O. Curtis
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Category : Douglas fir
Languages : en
Pages : 8
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Gives equations for estimating diameters at breast height of second-growth Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) from measured stump diameters over bark and stump heights, based on measurements at 22 locations in western Oregon and Washington.
Author: Robert O. Curtis
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 7
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Author: Charles J. Chambers
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ISBN:
Category : Douglas fir
Languages : en
Pages : 2
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Author: Carl Victor Bylin
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 16
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Author: James L. Van Deusen
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 4
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Author: Eric H. Wharton
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 4
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Author: Richard L. Williamson
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ISBN:
Category : Douglas fir
Languages : en
Pages : 16
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Author: Clifford A. Myers
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 2
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Author: Abdel Azim Zumrawi
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ISBN:
Category : Abies grandis
Languages : en
Pages : 16
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"Equations for predicting diameter growth are an essential component of single-tree growth and yield models (Munro 1974). Diameter growth predictions are used to characterize individual-tree development and to project the growth of stand basal area and volume. Both diameter growth and basal area growth have been used as the dependent variable in modeling the development of a tree's diameter (Holdaway 1984, Ritchie and Hann 1985, Wykoff 1986, Wensel et al. 1987, Dolph 1988). The choice of which dependent variable to use has usually been suggested by the data, including the behavior of the residuals and the goodness-of-fit of the resulting equations. Ritchie and Hann (1985) developed nonlinear basal-area growth equations for Douglas-fir (Pseudotsuga menziesii) and grand fir (Abies grandis). It was intended that the equations would be used to predict individual- tree diameter growth in the western Willamette Valley version of ORGANON (Hann et al. 1992). However, Hann and Larsen (1991) found that using a basal-area growth equation to predict diameter growth could result in erratic and unreasonable predictions of diameter growth for trees with small diameters. Therefore, the objective of the present study was to develop diameter growth equations for Douglas-fir and grand fir in the western Willamette Valley of Oregon by using the equation form of Hann and Larsen (1991)."--Introduction.
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 532
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