Pacific Southwest

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

Author: Uzoh, Fabian C.C.; Ritchie, Martin W.

Date: 1996

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

Station ID: RP-PSW-227

Description: 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

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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.