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Title: Forest resources of the Umatilla National Forest.
Author: Christensen, Glenn A.; Dunham, Paul; Powell, David C.; Hiserote, Bruce.
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)
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.
Keywords: Umatilla National Forest, forest inventory, Blue Mountains, Current Vegetation Survey
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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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