Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon
- RB_no_67.pdf
1.58 MB Adobe PDF
- Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon
- Trees -- Oregon -- Yields -- Mathematical models
- Feb-1990
- Corvallis, OR : Forest Research Lab, College of Forestry, Oregon State University
- Research bulletin (Oregon State University. Forest Research Laboratory)
- 67
- Models of stand growth and yield must include an estimate of mortality. For individual-tree/distance-independent growth-and-yield models. it is necessary (1) to predict the probability of death of individual trees and (2) to keep stand projections within reasonable biological limits (e.g., the maximum basal area that the stand can achieve). In this study, the probability of death of an individual tree is predicted by a logistic equation with coefficients estimated for tree species growing in the mixed-conifer zone of southwest Oregon. Overall stand projections are controlled by use of sizedensity trajectories that govern the approach of the stand to the maximum size-density line.
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