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    Author(s): Glenn A. Christensen; Paul Dunham; David C. Powell; Bruce Hiserote
    Date: 2007
    Source: Res. Bull. PNW-RB-253. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 38 p
    Publication Series: Resource Bulletin (RB)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (2.21 MB)

    Description

    Current resource statistics for the Umatilla National Forest, based on two separate inventories conducted in 1993–96 and in 1997–2002, are presented in this report. Currently on the Umatilla National Forest, 89 percent of the land area is classified as forest land. The predominant forest type is grand fir (26 percent of forested acres) followed by the interior Douglas-fir (25 percent) and ponderosa pine (17 percent) types. The majority of net cubic foot wood volume (55 percent) comes from trees ranging in size from 11 to 23 inches diameter at breast height. The most commonly recorded cause of tree death was bark beetle (primarily Dendroctonus spp.) attack, with over half of the mortality volume attributed to these insects.

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Christensen, Glenn A.; Dunham, Paul; Powell, David C.; Hiserote, Bruce. 2007. Forest resources of the Umatilla National Forest. Res. Bull. PNW-RB-253. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 38 p

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    Keywords

    Umatilla National Forest, forest inventory, Blue Mountains, Current Vegetation Survey

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https://www.fs.usda.gov/treesearch/pubs/27656