Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): David Verbyla
    Date: 2011
    Source: Environmental Research Letters. 6: 041003. 3 p.
    Publication Series: Scientific Journal (JRNL)
    Station: Pacific Northwest Research Station
    PDF: Download Publication  (227.33 KB)

    Description

    The GIMMS NDVI dataset has been widely used to document a “browning trend” in North American boreal forests (Goetz et al. 2005, Bunn et al. 2007, Beck and Goetz 2011). However, there has been speculation (Alcaraz-Segura et al. 2010) that this trend may be an artifact due to processing algorithms rather than an actual decline in vegetation activity. This conclusion was based primarily on the fact that GIMMS NDVI did not capture NDVI recovery within most burned areas in boreal Canada, while another dataset consistently showed post-fire increasing NDVI. I believe that the results of Alcaraz-Segura et al (2010) were due simply to different pixel sizes of the two datasets (64 km2 versus 1 km2 pixels). Similar results have been obtained from tundra areas greening in Alaska, with the results simply due to these pixel size differences (Stow et al. 2007). Furthermore, recent studies have documented boreal browning trends based on NDVI from other sensors.

    Publication Notes

    • You may send email to pnw_pnwpubs@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • 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.

    Citation

    Verbyla, David. 2011. Browning boreal forests of western North America. Environmental Research Letters. 6: 041003. 3 p. doi:10.1088/1748-9326/6/4/041003.

    Cited

    Google Scholar

    Keywords

    browning, NDVI, drought, warming, remote sensing

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/43319