Title:

Elliot Ranch ponderosa pine Levels-Of-Growing-Stock study in Tahoe National Forest of California

Author(s):

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

Publication Year:

2024

How to Cite:

These data were collected 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:

Zhang, Jianwei; Finely, Kaelyn A.; Uzoh, Fabian C.C. 2024. Elliot Ranch ponderosa pine Levels-Of-Growing-Stock study in Tahoe National Forest of California. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2024-0029

Abstract:

This data publication includes tree height, diameter at breast height (DBH at 4.5 feet), and tree condition measured every five years from 1969 to 2019 at the Elliot Ranch in Tahoe National Forest, California. Height to live crown was measured in all measurement years from 1969 until 1999. The study was established in 1969 by William W. Oliver, a Research Silviculturist at Pacific Southwest Forest and Range Experiment Station (currently, Pacific Southwest Research Station) as one of the joint, west-wide Level-Of-Growing-Stock study (LOGS) sites for even-aged ponderosa pine. The original plots were installed on 20-year-old ponderosa pine plantations regenerated with 6 by 8 foot spacing in spring 1950 following the Elliot Ranch Fire in 1949 that destroyed the young plantation planted after the McKenzie Mill Fire in 1936. Three replications of five growing-stock levels (GSLs; residual basal area in square feet per acre following thinning when quadratic mean diameter is 10 inches or greater): 40, 70, 100, 130, and 160 were randomly distributed across 15 total, 0.5 acre plots. All plots were buffered with a 30-foot isolation strip. Plots were occasionally rethinned back to the initial post-thinning basal area levels. Unfortunately, extensive mortality occurred in 2021 due to bark beetle infestation in the area and only a few trees survived in the plots. Therefore, the study was terminated.

Keywords:

biota; Natural Resource Management & Use; Timber; long-term silvicultural research plots; stand density; ponderosa pine; Pinus ponderosa; plantation; plantation resilience; timber production; levels-of-growing-stock; California; Tahoe National Forest; Placer County; Foresthill Ranger District

Related publications:

• Myers, Cliff A. 1967. Growing stock levels in even-aged ponderosa pine. Research Paper. RM-RP-33. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experimental Station. 8 p. https://research.fs.usda.gov/treesearch/34763
• Oliver, William W.; Powers, Robert F. 1971. Early height growth of ponderosa pine forecasts dominance in plantations. Research Notes. PSW-RN-250. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p. https://research.fs.usda.gov/treesearch/31295
• Oliver, William W.; Powers, Robert F. 1978. Growth models for ponderosa pine: I. Yield of unthinned plantations in northern California. Research Paper. PSW-RP-133. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 21 p. https://research.fs.usda.gov/treesearch/30602
• More (20 total)

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