July 30, 2018
Web-based application interface
Obtaining the height of trees is time-consuming and difficult, especially for species with a decurrent crown architecture. Measuring height to a fixed top diameter is one approach to avoid this problem, but that can be as subjective as total height. Another approach is to use local volume equations, which do not require height measurements.
Local equations were developed by using Forest Inventory and Analysis (FIA) data in Tennessee. Within a given FIA region, tree content can be estimated to any top diameter in terms of cubic ft volume, green weight, and board ft volume (Doyle and International log rules). In the example, yellow-poplar in the East Tennessee region with dbh=16 in. and top diameter=11 in. contains 129.8 bd ft (Doyle log rule), 197.7 bd ft (International log rule tables), 29.1 cubic ft, and 1923.6 lbs.
http://steveknowe.com/TennVol/LocalVolume.htm (case sensitive)