Crown area equations for 13 species of trees and shrubs in northern California and southwestern Oregon

Fabian C.C. Uzoh; Martin Ritchie

doi:10.2737/PSW-RP-227

Treesearch

Crown area equations for 13 species of trees and shrubs in northern California and southwestern Oregon

Informally Refereed

Authors:

Fabian C.C. Uzoh, Martin Ritchie

Year:

1996

Type:

Research Paper

Station:

Pacific Southwest Research Station

DOI:

https://doi.org/10.2737/PSW-RP-227

Source:

Res. Paper PSW-RP-227-Web. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; 13 p

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Download (PDF 584 KB): https://research.fs.usda.gov/download/treesearch/28581.pdf

Abstract

The equations presented predict crown area for 13 species of trees and shrubs which may be found growing in competition with commercial conifers during early stages of stand development. The equations express crown area as a function of basal area and height. Parameters were estimated for each species individually using weighted nonlinear least square regression.

Keywords

growth and yield, simulators

Citation

Uzoh, Fabian C.C.; Ritchie, Martin W. 1996. Crown area equations for 13 species of trees and shrubs in northern California and southwestern Oregon. Res. Paper PSW-RP-227-Web. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; 13 p