Total Tree and Its Utilization in the Southern United States

Using summaries of data abstracted from other studies, equations for predicting the dry weight of wood and bark in the main stem and crown were developed for red oak, yellow-poplar, and the four major species of southern pine. The equations are used to show, for various methods of harvesting, what proportion of wood and bark is removed and what proportion is left as logging residue. In sawtimber pines and excurrent hardwoods such as yellow-poplar, 85 to 90 percent of all above-stump wood is harvested if the main stem is logged to a 4-inch (10-cm) top; however, in sawtimber deliquescent hardwoods such as oak, logging to a 4-inch top removes only 74 to 80 percent of above-stump wood. When harvesting pulpwood trees and sawtimber deliquescent hardwoods, chipping ant total tree above the stump can significantly increase wood yields, compared to logging to a 4-inch top. In plantation pine, logging the stump and tap root as well as the main stem increases wood yields by 20 to 25 percent.

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