Forest health monitoring: national status, trends, and analysis 2021

This article contains other documents. View all titles contained within this article here.


The annual national report of the Forest Health Monitoring (FHM) program of the Forest Service, U.S. Department of Agriculture, presents forest health status and trends from a national or multistate regional perspective using a variety of sources, introduces new techniques for analyzing forest health data, and summarizes results of recently completed Evaluation Monitoring projects funded through the FHM national program. In this 21st edition in a series of annual reports, national survey data are used to identify recent geographic patterns of insect and disease activity. Satellite data are employed to detect geographic patterns of forest fire occurrence. Recent drought and moisture surplus conditions are compared across the conterminous United States. Data collected by the Forest Inventory and Analysis (FIA) program are employed to detect regional differences in tree mortality. Fine-scale change in Normalized Difference Vegetation Index (NDVI) was used to detect broad patterns of forest disturbance across the conterminous United States. Seven recently completed Evaluation Monitoring projects are summarized, addressing forest health concerns at smaller scales.

  • Citation: Potter, Kevin M.; Conkling, Barbara L., eds. 2022. Forest health monitoring: national status, trends, and analysis 2021. Gen. Tech. Rep. SRS-266. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station. 193 p.
  • Keywords: Change detection, disturbance, drought, fire, forest health, forest insects and disease, tree canopy, tree mortality.
  • Posted Date: May 24, 2022
  • Modified Date: June 8, 2022
  • Print Publications Are No Longer Available

    In an ongoing effort to be fiscally responsible, the Southern Research Station (SRS) will no longer produce and distribute hard copies of our publications. Many SRS publications are available at cost via the Government Printing Office (GPO). Electronic versions of publications may be downloaded, printed, and distributed.

    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
    • Our online publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS webmaster if you notice any errors which make this publication unusable.
    • To view this article, download the latest version of Adobe Acrobat Reader.