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Filtering by: Subject Douglas fir -- Thinning Creator Hann, David W. Decade 1990-1999

Extending southwest Oregon's Douglas-fir dominant height growth equation to older ages

Creator:

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

Abstract:

Hann and Scrivani (1987) developed dominant height growth equations for Douglas- fir in southwest Oregon using stem analysis data sets with an upper age of approximately 125 years at breast height. The objective of this study was to determine whether these equations could be extrapolated for ages of 250 years...

Resource Type:

Technical Report

Full Text:

Forestry ExtEnding SouthwESt orEgon’S douglaS-fir dominant hEight growth Equation to oldEr agES by
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:

Forestry Research Contribution 4 Diameter Growth equations for DouGlas-fir anD GranD fir in the