The standard crown depth and radius relationshipsParametersParameter name  Description 

Crown Height Exponent  The exponent in the standard equation for calculating crown depth.  Crown Radius Exponent  The exponent in the standard equation for determining the crown radius.  Maximum Crown Radius (Standard) (m)  The maximum crown radius allowed, in meters.  Slope of Asymptotic Crown Height  Slope of the standard equation for determining crown depth.  Slope of Asymptotic Crown Radius  Slope of the standard equation for determining crown radius. 
Crown radius is calculated as: rad = C_{1} * DBH ^{a}where:  rad is the crown radius, in meters
 C_{1} is the Slope of Asymptotic Crown Radius parameter
 a is the Crown Radius Exponent parameter
 DBH is the tree's DBH, in cm
Crown radius is limited to a maximum of the value put in the parameter Maximum Crown Radius (Standard) (m). Crown depth is calculated as ch = C_{2} * height ^{b}where  ch is the distance from the top to the bottom of the crown cylinder, in meters
 C_{2} is the Slope of Asymptotic Crown Height parameter
 height is the tree's height in meters
 b is the Crown Height Exponent parameter
