Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (1.06 MB bytes)

Title: Regional height-diameter equations for major tree species of southwest Oregon.

Author: Temesgen, H.; Hann, D.W.; Monleon, V.J.;

Date: 2006

Source: Western Journal of Applied Forestry. 22(3): 213-219

Publication Series: Scientific Journal (JRNL)

Description: Selected tree height and diameter functions were evaluated for their predictive abilities for major tree species of southwest Oregon. The equations included tree diameter alone, or diameter plus alternative measures of stand density and relative position. Two of the base equations were asymptotic functions, and two were exponential functional forms. The inclusion of the crown competition factor in larger trees and basal area, which indicates the relative position of a tree and stand density, into the base height-diameter equations increased the accuracy of prediction for all species. On the average, root mean square values were reduced by 40.4 cm (19 percent improvement). Two equations are recommended for estimating tree heights for major tree species in southwest Oregon.

Keywords: Tree height estimation, tree competition, basal area

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

XML: View XML

Citation:


Temesgen, H.; Hann, D.W.; Monleon, V.J. 2006. Regional height-diameter equations for major tree species of southwest Oregon. Western Journal of Applied Forestry. 22(3): 213-219

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.