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Forest Inventory and Analysis National Program


 

Forest Inventory & Analysis
National Office
U.S. Forest Service
1400 Independence Ave., SW
Washington, D.C. 20250-0003

(703) 605-4177

United States Department of Agriculture Forest Service.

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FIA Library

Sampling and Estimation Documentation 


 

The National Sampling Design and Estimation Procedures documentation presents an overview of the annual inventory concept, explains the three phases of FIA's sampling design, describes the sampling frame and plot configuration, presents the estimators that form the basis of FIA's National Information Management System (NIMS), and shows how annual data are combined for analysis. It also references a number of Web-based supplementary documents that provide greater detail about some of the more obscure aspects of the sampling and estimation system, as well as examples of calculations for most of the common estimators produced by FIA.



Coming Soon!
National Sampling Design and Estimation Procedures 2022

Awaiting final release approval
Sampling and Estimation Documentation for the Enhanced Forest Inventory and Analysis Program: 2022        
Westfall, James A.; Coulston, John W.; Moisen, Gretchen G.; Andersen, Hans-Erik; [Editors], 2022 (PDF ) 


Additional Documentation:

Urban FIA:


National Woodland Owner Survey (NWOS)


Timber Products Output (TPO):


FIA Carbon Attributes:


Small Area Estimation:


National Sampling Design and Estimation Procedures 

The Enhanced Forest Inventory and Analysis Program – National Sampling Design and Estimation Procedures
Bechtold, William A.; Patterson, Paul l.; [Editors], 2005 (PDF 2.6MB) 

Supporting Documents:

  • The Hexagon/Panel System for Selecting FIA Plots under an Annual Inventory (PDF 233KB)

  • FIA Tree Volume and Biomass Calculations (PDF 408KB)

  • Examples of FIA Point-in-Time Estimation Procedures for Several Common Cases (XLS 609KB)

  • Examples of FIA Change-Component Estimation Procedures for Several Common Cases (XLS 657KB)

  • Computation of FIA Plot Expansion Factors (PDF 22KB)

  • Archive/Historic Documents:



     


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    USDA Forest Service
    Last Modified: April 25, 2022


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