Title:

Ponderosa pine Levels-of-Growing-Stock study: Tree measurement and condition data for Crawford Creek and Lookout Mountain in Oregon

Author(s):

Uzoh, Fabian C.C.; Finley, Kaelyn A.; Zhang, Jianwei

Publication Year:

2024

How to Cite:

These data were collected mainly using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation:

Uzoh, Fabian C.C.; Finley, Kaelyn A.; Zhang, Jianwei. 2024. Ponderosa pine Levels-of-Growing-Stock study: Tree measurement and condition data for Crawford Creek and Lookout Mountain in Oregon. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2024-0062

Abstract:

Among the six installations located across the western United States of the ponderosa pine Levels-of-Growing-Stock (LOGS) study that began in the 1960's, the Pacific Northwest Forest and Range Experiment Station (currently, Pacific Northwest Research Station) has two installations that still exist today. One is Crawford Creek in the Blue Mountains on the Malheur National Forest in northeastern Oregon. The Crawford Creek site had 18 plots with six Growing Stock Levels (GSLs) (30, 60, 80, 100, 120, and 140 square feet per acre) installed on a 60-year-old, even-aged, natural ponderosa pine stand. Plot size ranged from 0.4 to 0.75 acre with additional 30-foot buffer strips. Plots were replicated in three blocks with six plots per block and were located across a range of aspects and slopes. The other site is on the south-facing slope of Lookout Mountain on the Pringle Falls Experimental Forest and adjacent to Deschutes National Forest in central Oregon. At the time of plot installation, it was a 65-year-old pure ponderosa pine natural stand. Six GSLs (30, 60, 80, 100, 120, and 150 square feet per acre) were randomly assigned to one of the three blocks, with a plot size of 0.5 acres with additional 30-foot buffer strips. Data collection began in 1967 at Crawford Creek and in 1965 at Lookout Mountain and continued roughly every 5 years until 2019. This data publication includes the tree height, diameter at breast height, height to base of live crown, and condition data collected at both sites.

Keywords:

biota; Natural Resource Management & Use; Carbon; long-term silvicultural research plots; stand density; timber production; levels-of-growing-stock; vegetation; forest resources; Oregon; Pringle Falls Experimental Forest; Deschutes National Forest; Malheur National Forest; Lookout Mountain; Blue Mountains; Crawford Creek

Related publications:

• Barrett, James W. 1983. Growth of ponderosa pine poles thinned to different stocking levels in central Oregon. Research Paper. PNW-RP-311. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 9 p. https://doi.org/10.2737/PNW-RP-311
• Cochran, P.H.; Barrett, James W. 1995. Growth and mortality of ponderosa pine poles thinned to various densities in the Blue Mountains of Oregon. Research Paper. PNW-RP-483. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 27 p. https://doi.org/10.2737/PNW-RP-483
• Cochran, P.H.; Barrett, James W. 1999. Growth of ponderosa pine thinned to different stocking levels in central Oregon: 30-year results. Research Paper. PNW-RP-508. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 27 p. https://doi.org/10.2737/PNW-RP-508
• More (11 total)

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