Skip to page content
USDA Forest Service

Research & Development Treesearch

Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help - We Participate  Government Made Easy

Global Forest Information Service

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

(202) 205-8333

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

Publication Information

View PDF (786 KB)

Title: Estimating and validating harvesting system production through computer simulation

Author: Baumgras, John E.; Hassler, Curt C.; LeDoux, Chris B.;

Date: 1993

Source: Forest Products Journal 43(11/12):65-71

Publication Series: Scientific Journal (JRNL)

Description: A Ground Based Harvesting System Simulation model (GB-SIM) has been developed to estimate stump-to-truck production rates and multiproduct yields for conventional ground-based timber harvesting systems in Appalachian hardwood stands. Simulation results reflect inputs that define harvest site and timber stand attributes, wood utilization options, and key attributes of the harvesting operation. Statistical validation of GB-SIM was conducted with harvesting production data collected from 16 harvest units and 2 logging operations, including partial cuts and clearcuts in Appalachian hardwood stands. The mean error in estimated production rates was 14.1 ft.³/ hour, or 2.6 percent of the observed rates. For 10 of the 16 units, this error was less than 10 percent of the observed production rate. Nonparametric tests conducted with five replications of each simulated harvest did not find a statistically significant difference between the distributions of actual and simulated production rates. These validation results indicate that GB-SIM can be used to estimate harvesting system production rates and product yields; information required to conduct economic analysis of wood utilization and forest management alternatives. Simulation results are also presented that contrast two different logging crews and compare production rates from eight unique wood utilization options.

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.
  • This publication may be available in hard copy. Check the Northern Research Station web site to request a printed copy of this publication.
  • Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact Sharon Hobrla, if you notice any errors which make this publication unusable.



Baumgras, John E.; Hassler, Curt C.; LeDoux, Chris B. 1993. Estimating and validating harvesting system production through computer simulation. Forest Products Journal 43(11/12):65-71


 [ 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.