Growth Models for Ponderosa Pine: I. Yield of Unthinned Plantations in Northern California

摘要

Yields for high-survival, unthinned ponderosa pine Pinus ponderosa, plantations in northern California are estimated. Stems of 367 trees in 12 plantations were analyzed to produce a growth model simulating stand yields. Diameter, basal area, and net cubic volume yields by Site Indices sub 50 40 through 120 are tabulated for stands ranging in age between 10 and 50 years and in spacing between 6 by 6 and 12 by 12 feet. Tables also show diameter distributions by crown classes and stem volumes in cubic feet for plantation-growth ponderosa pine.