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 (2.3 MB bytes)

Title: Equations for total, wood, and saw-log volume for thirteen California hardwoods.

Author: Pillsbury, Norman H.; Kirkley, Michael L.;

Date: 1984

Source: Res. Note PNW-RN-414. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 52 p

Publication Series: Research Note (RN)

Description: Volume equations for thirteen species of California hardwoods were developed from measurements of 766 sample trees from all parts of the state. The species included: bigleaf maple (Acer macrophyllum Pursh), Pacific madrone (Arbutus menziesii Pursh), giant chinkapin (Castanopsis chrysophylla (Dougl.) A. DC.), tanoak (Lithocarpus densiflorus (Hook. & Arn.) Rehd.), coast live oak (Quercus agrifolia Nee), canyon live oak (Quercus chrysolepis Liebm.), blue oak (Quercus douglasii Hook. & Arn.), Engelmann oak (Quercus engelmannii Greene), Oregon white oak (Quercus garryana Dougl. ex Hook), California black oak (Quercus kelloggii Newb.), California white oak or valley Oak (Quercus lobata Nee), interior live oak (Quercus wislizeni A. DC.), and California-laurel (Umbellularia californica (Hook. & Arn.) Nutt.).

Measurements were taken of standing trees using a Spiegel Relaskop. English and metric equations for three utilization standards were developed for each species: (1) total tree volume (all stem and branch wood plus stump and bark); (2) wood volume (all wood inside bark from stump to 10 cm (4 in) top outside bark); and (3) saw-log volume for trees 28 cm (11 in) diameter at breast height and larger (straight sections from stump to 23 cm (9 in) top outside bark). Diameter and height were found to be good predictors of total volume and wood volume. An indicator variable representing whether or not the first segment was merchantable, in addition to diameter and height, was found to be a good predictor of saw-log volume for eight of the species.

Keywords: volume equations, volume measurement, hardwoods, California

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.
  • You may send email to pnw_pnwpubs@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

XML: View XML

Citation:


Pillsbury, Norman H.; Kirkley, Michael L. 1984. Equations for total, wood, and saw-log volume for thirteen California hardwoods. Res. Note PNW-RN-414. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 52 p

 


 [ 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.