Author: Sally J. Campbell
Publisher:
ISBN:
Category : Forest surveys
Languages : en
Pages : 44
Book Description
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.
Forests of Eastern Oregon
Author: Sally J. Campbell
Publisher:
ISBN:
Category : Forest surveys
Languages : en
Pages : 44
Book Description
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.
Publisher:
ISBN:
Category : Forest surveys
Languages : en
Pages : 44
Book Description
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.
Ecology and Management of Eastern Oregon Forests
Author: William H. Emmingham
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 222
Book Description
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 222
Book Description
Forests of eastern Oregon
Author: Sally J. Campbell
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Silviculture of Mixed Conifer Forests in Eastern Oregon and Washington
Author: Kenneth W. Seidel
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 76
Book Description
The silviculture of mixed conifer forests in eastern Oregon and Washington is described. Topics discussed include ecological setting, damaging agents, silviculture, and management. The relevant literature is presented, along with unpublished research, experience, and observations. Research needs are also proposed.
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 76
Book Description
The silviculture of mixed conifer forests in eastern Oregon and Washington is described. Topics discussed include ecological setting, damaging agents, silviculture, and management. The relevant literature is presented, along with unpublished research, experience, and observations. Research needs are also proposed.
Historical and Current Forest Landscapes of Eastern Oregon and Washington
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 52
Book Description
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 52
Book Description
Ten-year Results in a Cottonwood Plantation Spacing Study
Author: R. M. Krinard
Publisher:
ISBN:
Category : Cottonwood
Languages : en
Pages : 62
Book Description
Publisher:
ISBN:
Category : Cottonwood
Languages : en
Pages : 62
Book Description
Historical and Current Forest Landscapes of Eastern Oregon and Washington
Author:
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 96
Book Description
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 96
Book Description
Forested Plant Associations of the Oregon East Cascades
Author: Michael Simpson
Publisher:
ISBN:
Category : Cascade Range
Languages : en
Pages : 612
Book Description
Publisher:
ISBN:
Category : Cascade Range
Languages : en
Pages : 612
Book Description
Historical and Current Forest Landscapes of Eastern Oregon and Washington
Author:
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 96
Book Description
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 96
Book Description
Understanding Eastside Forests
Author: Stephen Arthur Fitzgerald
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 23
Book Description
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 23
Book Description