Growth of Ponderosa Pine Thinned to Different Stocking Levels in Northern Arizona

摘要

A dense, immature ponderosa pine stand was thinned in 1962, 1972, and 1982 to six growing stock levels (30, 60, 80, 100, 120, and 150). Except for height, average tree growth characteristics (diameter, crown length, and width) were negatively correlated with residual stand density. Stand basal area and volume increment were positively related to stand density.