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Author : Michael Simpson
Publisher : Unknown
Page : 612 pages
File Size : 41,9 Mb
Release : 2007
Category : Cascade Range
ISBN : MINN:31951D02850518M
Author : Michael Simpson
Publisher : Unknown
Page : 128 pages
File Size : 54,9 Mb
Release : 2007
Category : Cascade Range Region
ISBN : LCCN:2008379227
Author : Clinton K. Williams,Terry R. Lillybridge,Bradley Gene Smith
Publisher : Unknown
Page : 152 pages
File Size : 43,9 Mb
Release : 1990
Category : Colville National Forest (Wash.)
ISBN : MINN:31951D00780765A
Author : Anonim
Publisher : Unknown
Page : 402 pages
File Size : 41,9 Mb
Release : 1996
Category : Forest plants
ISBN : UVA:X005015284
Author : Anonim
Publisher : Unknown
Page : 206 pages
File Size : 54,9 Mb
Release : 1992
Category : Forest plants
ISBN : MINN:31951D015475881
Author : Miles A. Hemstrom,Sheila E. Logan
Publisher : Unknown
Page : 140 pages
File Size : 48,8 Mb
Release : 1986
Category : Forest animals
ISBN : UCD:35555000601585
Author : Anonim
Publisher : Unknown
Page : 84 pages
File Size : 40,9 Mb
Release : 1983
Category : Fir
ISBN : MINN:31951002908452V
Author : Miles A. Hemstrom,Sheila E. Logan,Warren Pavlat
Publisher : Unknown
Page : 328 pages
File Size : 55,5 Mb
Release : 1987
Category : Fir
ISBN : RUTGERS:39030042106700
Author : Leonard A. Volland
Publisher : Unknown
Page : 222 pages
File Size : 43,5 Mb
Release : 1985
Category : Botany
ISBN : MINN:31951002936999D
Author : Charles G. Johnson,Roderick R. Clausnitzer
Publisher : Unknown
Page : 222 pages
File Size : 46,5 Mb
Release : 1992
Category : Blue Mountains (Or. and Wash.)
ISBN : UVA:X002084613
Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 41,9 Mb
Release : 1996
Category : Forest plants
ISBN : OCLC:37330986
Author : Anonim
Publisher : Unknown
Page : 112 pages
File Size : 52,6 Mb
Release : 1982
Category : Fir
ISBN : MINN:31951D01212355G
Author : Anonim
Publisher : Unknown
Page : 540 pages
File Size : 42,9 Mb
Release : 2011
Category : Electronic
ISBN : NWU:35556041837436
Author : Robin D. Lesher,Jan A. Henderson
Publisher : Unknown
Page : 126 pages
File Size : 46,7 Mb
Release : 1992
Category : Forest plants
ISBN : UVA:X002183717
Author : Sally J. Campbell
Publisher : Unknown
Page : 44 pages
File Size : 52,6 Mb
Release : 2003
Category : Forest surveys
ISBN : MINN:31951D029965129
This publication provides highlights of forest inventories and surveys from 1993 to 2001. About 35 percent of eastern Oregon is forested. The amount of forest land in eastern Oregon has increased by about 650,000 acres from the 1930s, with increases in juniper forest land accounting for most of the change. Thirty-one tree species were tallied in forest inventories during the 1990s, with ponderosa pine the predominant species in all ecological provinces in eastern Oregon. The Forest Service, Bureau of Land Management, and other federal agencies manage about 71 percent of eastern Oregon forests; about 27 percent is privately owned; and the remaining 2 percent is managed by the Oregon Department of Forestry and other nonfederal public agencies. The volume of wood in eastern Oregon forests is about 25.7 billion cubic feet, of which about 312 million cubic feet per year were harvested between 1987 and 1999. In the same time period, annual mortality and removals exceeded annual growth for all ownerships. Down wood is an important forest component and shows increases with forest age. Insect defoliators, bark beetles, root diseases, and dwarf mistletoes are present on over 72 percent of forest land in eastern Oregon. Year-to-year defoliation or mortality trends can be detected with aerial surveys. Introduced plant species are present on over 50 percent of private and other public forest land. Diversity of lichens (indicators of air pollution, climate, and forest age and structure) is greatest in the Blue Mountains Province and lowest in the Intermountain Province. No ozone injury has been detected on sensitive forest trees and plant species in eastern Oregon.