Title:

Long-term effect of density management on growth and yield of true fir (Abies concolor and Abies magnifica) stands in northern California

Author(s):

Finley, Kaelyn A.; Zhang, Jianwei

Publication Year:

2025

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:

Finley, Kaelyn A.; Zhang, Jianwei. 2025. Long-term effect of density management on growth and yield of true fir (Abies concolor and Abies magnifica) stands in northern California. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2025-0053

Abstract:

This data publication includes data from several long-term true fir (white fir (Abies concolor) and red fir (Abies magnifica)) studies established independently across northern California that underwent varying levels of thinning at each site. While some additional treatments such as fertilization were applied to some of the study sites, the primary focus was the effects of residual density following commercial thinning. The study sites include: Jennie Springs, Swain Mountain, and Swain Pole at Swain Mountain Experimental Forest within Lassen National Forest; Big Lake and Crater Peak at Lassen National Forest; Little Glass Mountain and Pumice Stone Mountain at Klamath National Forest; and LaTour site in LaTour Demonstration State Forest (California Department of Forestry and Fire Protection). Data collection years vary for each site, ranging from 1963 to 2023. Tree-level measurements at each site and plot include data such as: species, stand age, diameter at breast height, height, height to base of live crown, and tree condition. Two sites burned in the 2021 Dixie fire also include post-fire data collected in 2022 which include survival status, percentage crown volume affected and torched, crown scorch height and bark char height.

Keywords:

biota; Natural Resource Management & Use; Carbon; long-term silvicultural research plots; stand density; thinning; timber production; true fir; red fir; white fir; vegetation; forest resources; California; Swain Mountain Experimental Forest; Lassen National Forest; Klamath National Forest; Latour Demonstration State Forest

Related publications:

• Cochran, P. H.; Oliver, W. W. 1988. Growth rates for managed stands of white fir. p. 197-200. In: Schmidt, W. C. (comp). 1988. Proceedings - Future Forests of the Mountain West: A Stand Culture Symposium. General Technical Report. INT-GTR-243. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station. 1986 September 29 - October 3 in Missoula, MT.
• Fieber, William; Robson, Thomas. 1985. Jennie Springs…Horse logging as a new enterprise. U.S. Department of Agriculture, Forest Service, Pacific Southwest Region. 20 p. (included in package: \Supplements\Fieber-Robson_JennieSprings_HorseLogging.pdf).
• McColl, J. G.; Power, R. F. 2003. Decomposition of small woody debris of California red fir: mass loss and elemental content over 17 years. Soil Science Society of American Journal. 67: 1227-1233. https://doi.org/10.2136/sssaj2003.1227
• More (10 total)

Metrics:

Visit count : 136 0
Download count: 5
More details

Data Access:

• View metadata (HTML)
• View file index (HTML), which lists all files in this data publication and short description of their contents
• Download all files below for the complete publication:
  • RDS-2025-0053_Metadata_Fileindex.zip (23.41 KB; Checksum)
  • RDS-2025-0053.zip (5.75 MB; Checksum)

Need information about Using our Formats?