Crown Shape Factors & Volumes
Many of the models for determining loads and forces in tree structural systems depend upon crown shape. Tree crown shapes are integral to a variety of models because volume estimates, surface area estimates, or various types of two dimensional crown projections are directly related to crown shape. Calculating crown shape in a natural setting under dynamic loads requires continuous changes (over a variety of time and spacial scales) with growth, damage, and applied forces.
The link address is: http://www.urbanforestrysouth.org/resources/library/Citation.2005-12-07.0632/file_name