New Tree-Classification System Used by the Southern Forest Inventory and Analysis Unit

摘要

Trees on USDA Forest Service, Southern Forest Inventory and Analysis, sample locations are classified as growing stock or cull on the basis of their ability to produce sawlogs. A new tree-classification system is described and contrasted with the old system. Inventory data from the recently completed survey of north Alabama are used to illustrate the impacts of the new system on the reporting of tree volumes. The new tree-classification system provides a better means of determining a tree's class and ability to produce sawlogs and is consistent with the old system and compatible with the systems employed by other eastern Forest Inventory and Analysis units.