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
Help
 

GeoTreesearch


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

(171 KB)

Title: Estimating and circumventing the effects of perturbing and swapping inventory plot locations

Author: McRoberts, Ronald E.; Holden, Geoffrey R.; Nelson, Mark D.; Liknes, Greg C.; Moser, Warren K.; Lister, Andrew J.; King, Susan L.; LaPoint, Elizabeth B.; Coulston, John W.; Smith, W. Brad; Reams, Gregory A..

Date: 2005

Source: Journal of Forestry. 3(6): 275-279.

Publication Series: Journal/Magazine Article (JRNL)

Description: The Forest Inventory and Analysis (FIA) program of the USDA Forest Service reports data and information about the Nation's forest resources. Increasingly, users request that FIA data and information be reported and distributed in a geospatial context, and they request access to exact plot locations for their own analyses. However, the FIA program is constrained by law from disclosing exact locations and, instead, releases only approximate locations. The results of the study indicate that the effects of using approximate locations are negligible for design-based estimates for circular areas of radii greater than approximately 20 mi (32 km). For model-based estimates, the results are less definitive and depend on the modeling technique, the spatial resolution of units on which variables are observed, spatial correlation in the variables, and the quality of fit of the model to the data. Several methods for circumventing the effects of the approximate locations are discussed.

Keywords: estimation, models, correlation, bias

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, shobrla@fs.fed.us if you notice any errors which make this publication unusable.

XML: View XML

Citation:


McRoberts, Ronald E.; Holden, Geoffrey R.; Nelson, Mark D.; Liknes, Greg C.; Moser, Warren K.; Lister, Andrew J.; King, Susan L.; LaPoint, Elizabeth B.; Coulston, John W.; Smith, W. Brad; Reams, Gregory A.. 2005. Estimating and circumventing the effects of perturbing and swapping inventory plot locations. Journal of Forestry. 3(6): 275-279.

 


 [ 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.