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USFS Logo Research Data Archive

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Displaying items 21 - 40 of 249
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Porcupine R. at white spruce plot 328, a 215 yr. old stand. Site index is approx. 55. Bd. ft. vol.* is about 4200 bd. ft. per acre, 2300 cubic ft. per acre in trees 5. inches and larger. *(International 1/4-inch rule).
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: forest mensuration
increment
development and structure of stands
yield tables and their construction
yield models
Location: Alaska; Porcupine River
Description: Porcupine R. at white spruce plot 328, a 215 yr. old stand. Site index is approx. 55. Bd. ft. vol.* is about 4200 bd. ft. per acre, 2300 cubic ft. per acre in trees 5. inches and larger. *(International 1/4-inch rule).
Date: 6/1976

Porcupine River and the Sheenjek River entering from the north.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska; Porcupine River
Description: Porcupine River and the Sheenjek River entering from the north.
Date: 6/1976

Porcupine River at white spruce plot 328; a 215 year old stand. Site index is approx 55. Board-foot vol. is about 4200 board-feet per acre, 2300 cubic-feet per acre in trees 5 inches and larger.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska; Porcupine River
Description: Porcupine River at white spruce plot 328; a 215 year old stand. Site index is approx 55. Board-foot vol. is about 4200 board-feet per acre, 2300 cubic-feet per acre in trees 5 inches and larger.
Date: 6/1976

Porcupine River between white spruce plots 326 and 328.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska; Porcupine River
Description: Porcupine River between white spruce plots 326 and 328.
Date: 6/1976

Porcupine River between white spruce plots 326 and 328.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska; Porcupine River
Description: Porcupine River between white spruce plots 326 and 328.
Date: 6/1976

Porcupine River east of where the Sheenjek River enters the Porcupine.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska; Porcupine River
Description: Porcupine River east of where the Sheenjek River enters the Porcupine.
Date: 6/1976

Primary succession of willow on a river bar at Bar Car on the Porcupine River.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska; Porcupine River
Description: Primary succession of willow on a river bar at Bar Car on the Porcupine River.
Date: 6/1976

Scatered white spruce at 12 mile lake south of Fort Yukon site index 55 to 65.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska; Fort Yukon; Twelvemile Lake
Description: Scatered white spruce at 12 mile lake south of Fort Yukon site index 55 to 65.
Date: 6/1976

Scattered white spruce at 12 Mile Lake south of Ft. Yukon showing typical characteristic of apical dominance. Spruce are 60' tall and about 120 years old at breast height.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska; Fort Yukon; Twelvemile Lake
Description: Scattered white spruce at 12 Mile Lake south of Ft. Yukon showing typical characteristic of apical dominance. Spruce are 60' tall and about 120 years old at breast height.
Date: 6/1976

The Porcupine River.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska; Porcupine River
Description: The Porcupine River.
Date: 6/1976

Twelve Mile Lake south of Fort Yukon.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska; Fort Yukon; Twelvemile Lake
Description: Twelve Mile Lake south of Fort Yukon.
Date: 6/1976

Upriver from plots 331 and 332.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska; Porcupine River
Description: Upriver from plots 331 and 332.
Date: 6/1976

Upriver from plots 331 and 332.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: silvicultural systems
constitution and composition of stands
forms of stand
Location: Alaska
Description: Upriver from plots 331 and 332.
Date: 6/1976

White spruce plot 327.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: forest mensuration
increment
development and structure of stands
yield tables and their construction
yield models
Location: Alaska
Description: White spruce plot 327.
Date: 6/1976

White spruce plot 327.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: forest mensuration
increment
development and structure of stands
yield tables and their construction
yield models
Location: Alaska
Description: White spruce plot 327.
Date: 6/1976

White spruce plot 327; a 152 year old stand, site index 53.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: forest mensuration
increment
development and structure of stands
yield tables and their construction
yield models
Location: Alaska
Description: White spruce plot 327; a 152 year old stand, site index 53.
Date: 6/1976

White spruce plot 332; a 176 yr. old stand of site index 54. Cubic foot vol. per acre is approx. 2140 in trees 5 inches and larger.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: forest mensuration
increment
development and structure of stands
yield tables and their construction
yield models
Location: Alaska
Description: White spruce plot 332; a 176 yr. old stand of site index 54. Cubic foot vol. per acre is approx. 2140 in trees 5 inches and larger.
Date: 6/1976

White spruce plot 332; a 176 yr. old stand of site index 54. Cubic foot volume per acre is approximately 2140 in trees 5 inches and larger.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: forest mensuration
increment
development and structure of stands
yield tables and their construction
yield models
Location: Alaska
Description: White spruce plot 332; a 176 yr. old stand of site index 54. Cubic foot volume per acre is approximately 2140 in trees 5 inches and larger.
Date: 6/1976

White spruce yield plot 327 on Porcupine River. This 152 year old stand has site index 53. Cubic foot vol. per acre = 1320 in trees 5 inches and larger.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: forest mensuration
increment
development and structure of stands
yield tables and their construction
yield models
Location: Alaska; Porcupine River
Description: White spruce yield plot 327 on Porcupine River. This 152 year old stand has site index 53. Cubic foot vol. per acre = 1320 in trees 5 inches and larger.
Date: 6/1976

White spruce yield plot 327 on Porcupine River. This 152 year old stand has site index 53. Cubic foot vol. per acre = 1320 in trees 5 inches and larger.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: forest mensuration
increment
development and structure of stands
yield tables and their construction
yield models
Location: Alaska; Porcupine River
Description: White spruce yield plot 327 on Porcupine River. This 152 year old stand has site index 53. Cubic foot vol. per acre = 1320 in trees 5 inches and larger.
Date: 6/1976