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Filtering by: Subject Douglas fir -- Oregon -- Growth -- Mathematical models

Planning with PSME : a growth model for young Douglas-fir and hardwood stands in southwestern Oregon

Creator:

Oregon State University. Forest Research Laboratory and Harrington, Timothy B. (Timothy Brian)

Resource Type:

Other
Nonlinear models of height growth for Douglas-fir in southwestern Oregon

Creator:

Scrivani, John A.

Abstract:

A review is made of methods which assess the bias and non-normality of parameter estimates and predictions obtained with nonlinear regression. Particular emphasis is placed upon curvature measures of nonlinearity, related measures of parameter and prediction bias, and the effects of reparameterizations. Alternate models of individual tree height growth are...

Resource Type:

Dissertation
Construction of regression models for predicting crown development in southwestern Oregon Douglas-fir

Creator:

Maguire, Douglas A. (Douglas Alan)

Abstract:

A branch mortality dating technique and whorl sampling strategy were implemented to model five-year crown recession from data collected on temporary plots. Twenty-eight Douglas-fir from two levels-of-growing- stock studies in Oregon and Washington were first dissected to validate the proposed dating technique and assess alternative sampling strategies. Branch mortalities in...

Resource Type:

Dissertation