Polymorphic site index curves for red fir in California and southern Oregon

K. Leroy Dolph

doi:10.2737/PSW-RP-206

Treesearch

Polymorphic site index curves for red fir in California and southern Oregon

Informally Refereed

Authors:

K. Leroy Dolph

Year:

1991

Type:

Research Paper

Station:

Pacific Southwest Research Station

DOI:

https://doi.org/10.2737/PSW-RP-206

Source:

Res. Paper PSW-206. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 18 p.

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Abstract

Polymorphic site index curves were developed from stem analysis data of 194 dominant red fir trees in California and southern Oregon. Site index was based on breast-height age and total tree height, with a base age of 50 years at breast height. Site index curves for breast height ages 10 to 160 years are presented for approximate estimates of site index. For more precise estimates, tabular vaiues of total tree height as a function of breast-height age and site index are given. Guidelines for selection of site trees and application of the site curves are discussed.

Keywords

site index, stem analysis, increment (height), red fir, Abies magnifica, California, Oregon

Citation

Dolph, K. Leroy. 1991. Polymorphic site index curves for red fir in California and southern Oregon. Res. Paper PSW-206. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 18 p.