Examples of Mortality and Reduced Annual Increments of White Fir Induced byDrought, Insects, and Disease at Different Stand Densities

摘要

A levels-of-growing-stock (LOGS) study in white fire was established in 1982 toinvestigate growth, yield, and mortality at low stand densities. At the time of establishment, little density-related mortality was expected. Suppressed trees were removed in the initial thinning and the study was to be repeatedly thinned. Mortality due to agents other than suppression in even-aged white fir stands has not been shown to be related to stand density.