Title:

Ponderosa pine initial spacing study at Challenge Experimental Forest

Author(s):

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

Publication Year:

2023

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:

Uzoh, Fabian C.C.; Finley, Kaelyn A.; Zhang, Jianwei. 2023. Ponderosa pine initial spacing study at Challenge Experimental Forest. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2023-0046

Abstract:

This data publication includes original tree data collected as a guide to investigate the effect of initial tree spacing, brush competition, and the interaction of these two factors on growth and development of a ponderosa pine (Pinus ponderosa Laws.) plantation at the Challenge Experimental Forest in northern California. Data span over 60 years with height and diameter at breast height (if tree height reached 1.37 meters) being measured every year from 1968 to 1975, every two years from 1975 to 1985, every four years from 1985 to 2002, and every five years after that up through 2022. Other measurements recorded during these same years include tree condition codes, height to live crown, crown width (1970-2002), and volume measurements for some trees (1977-1993).

Keywords:

environment; Forest & Plant Health; Inventory, Monitoring, & Analysis; Pinus ponderosa; tree density; competing vegetation; tree growth; understory vegetation; plant competition; long-term study; initial spacing study; Challenge Experimental Forest; California; Yuba County

Related publications:

• Oliver, William W. 1979. Early response of ponderosa pine to spacing and brush: observation on a 12-year-old plantation. Research Note. PSW-341. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 7 p. https://research.fs.usda.gov/treesearch/48531
• Oliver, William W. 1990. Brush competition retards early stand development of planted ponderosa pine: update on a 24-year study. In: Proceedings, 11th Annual Conference on Forest Vegetation Management. Forest Vegetation Management Conference: p. 107-113. https://research.fs.usda.gov/treesearch/48525
• Oliver, William W. 1990. Spacing and shrub competition influence 20-year development of planted ponderosa pine. Western Journal of Applied Forestry. 5(3): 79-82. https://doi.org/10.1093/wjaf/5.3.79 https://research.fs.usda.gov/treesearch/48526
• More (10 total)

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