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
 

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

(715 KB)

Title: The role of pre-field operations at four forest inventory units: We can see the trees, not just the forest

Author: Goeking, Sara A.; Liknes, Greg C.

Date: 2009

Source: In: McWilliams, Will; Moisen, Gretchen; Czaplewski, Ray, comps. Forest Inventory and Analysis (FIA) Symposium 2008; October 21-23, 2008; Park City, UT. Proc. RMRS-P-56CD. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 12 p.

Publication Series: Proceedings (P)

   Note: This article is part of a larger document. View the larger document

Description: The Forest Inventory and Analysis (FIA) program attempts to inventory all forested lands throughout the United States. Each of the four FIA units has developed a process to minimize inventory costs by refraining from visiting those plots in the national inventory grid that are undoubtedly nonforest. We refer to this process as pre-field operations. Until recently, the pre-field process of differentiating forest from nonforest plots received very little attention or scrutiny. No national pre-field manual currently exists, nor does any other form of formal documentation of the pre-field process. Prefield specialists from all four FIA units gathered in December 2007 to discuss the role of pre-field operations, to identify national commonalities, to share techniques and technologies, and to explore opportunities to increase efficiency and expand functionality. The meeting revealed that each of the four FIA pre-field teams serves the same two fundamental roles: 1) identifying plot locations that are potentially forested and therefore require visitation by a field crew, and 2) subsequently preparing field materials. Each pre-field team currently practices some form of quality assurance, yet no common procedures exist regarding pre-field quality assessment and quality control. Participants agreed that additional information could be derived from the photointerpretive aspect of this process via the collection of land use and crown cover data from all FIA plots, including those that are not visited by field crews. Such information might facilitate estimates of nonforest conditions with trees, e.g., urban forest, and landuse changes, e.g., the development of formerly forested lands. This paper documents the current status of pre-field operations, suggests areas for future process improvements and collaboration among the four FIA units, and evaluates the potential of the pre-field process to provide additional information to the inventory.

Keywords: pre-field, forest canopy, canopy cover, crown cover, nonforest land use, aerial photography, National Agriculture Imagery Program, image segmentation

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 rmrspubrequest@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:


Goeking, Sara A.; Liknes, Greg C. 2009. The role of pre-field operations at four forest inventory units: We can see the trees, not just the forest. In: McWilliams, Will; Moisen, Gretchen; Czaplewski, Ray, comps. Forest Inventory and Analysis (FIA) Symposium 2008; October 21-23, 2008; Park City, UT. Proc. RMRS-P-56CD. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 12 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.