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Filtering by: Subject Douglas fir -- Oregon -- Willamette Valley -- Growth -- Mathematical models Decade 1990-1999

Diameter growth equations for Douglas-fir and grand fir in the western Willamette Valley of Oregon

Creator:

Zumrawi, Abdel Azim, Hann, David W., and Oregon State University. Forest Research Laboratory

Abstract:

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...

Resource Type:

Technical Report

Full Text:

GranD fir in the western willamette Valley of oreGon by Abdel Azim Zumrawi David W. Hann ii
Modeling crown profile of Douglas-fir in the Western Willamette Valley

Creator:

Mortzheim, Joseph T.

Abstract:

Crown profile was modeled using a system of equations with three components. The first equation predicts the maximum crown width of an open grown tree based on the tree's diameter at breast height. The second equation modifies maximum crown width to represent the largest width of the crown in stand...

Resource Type:

Masters Thesis