Technical Report

 

Equations for predicting height to crown base for fourteen tree species in southwest Oregon Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/technical_reports/z029p5970

Descriptions

Attribute NameValues
Alternative Title
Creator
Abstract
  • Equations are presented for predicting height to crown base (or bole ratio) for fourteen species of trees common to the mixed-conifer zone of southwest Oregon. Nonlinear regression was used to fit a weighted logistic function for each species. The independent variables include height, crown competition factor in larger trees, stand basal area, site index, and diameter divided by height. Although a number of alternative model forms were considered, the logistic function was found to fit the data best. Validation of the model indicated possible difficulties with ponderosa pine and golden chinkapin, but these problems are probably due to inconsistencies in the validation data rather than shortcomings in the individual models.
Resource Type
Date Available
Date Issued
Academic Affiliation
Series
Subject
Rights Statement
Publisher
Language
File Format
File Extent
  • 2705480 bytes
Digitization Specifications
  • Master files scanned at 600 ppi (256 Grayscale) using Capture Perfect 3.0 on a Canon DR-9080C in TIF format. PDF derivative scanned at 300 ppi (256 Grayscale), using Capture Perfect 3.0, on a Canon DR-9080C. CVista PdfCompressor 3.1 was used for pdf compression and textual OCR.
Replaces

Relationships

Parents:

This work has no parents.

Items