Table 33 . --Definition of variables used to model ingrowth 



Variable Definition 



BJBAGl-4" Predicted basal area growth of the 4-inch diameter class 



using the even- and uneven-aged blackjack pine equation 



BJBAG2-4" Predicted basal area growth of the 4-inch diameter class 



using the uneven-aged blackjack pine equation 



S Minor's (1964) site index 



C Predicted number of cones per acre per year 



MD Mean stand diameter 



QMD Quadratic mean stand diameter 



TIME Time-since-last-cutting 



T Total number of trees per acre 



BA Total basal area per acre 



BCj Basal area in the 4-inch through 6-inch diameter classes 



BC2 Basal area in the 7-inch through 9-inch diameter classes 



BC3 Basal area in the 10-inch through 15-inch diameter classes 



BCi+ Basal area in the 16-inch through 21-inch diameter classes 



BC5 Basal area in the 22-inch through 27-inch diameter classes 



BCg Basal area in the 28+-inch diameter classes 



TCi Total number of trees in the 4-inch through 6-inch diameter classes 



TC2 Total number of trees in the 7-inch through 9-inch diameter classes 



TC3 Total number of trees in the 10-inch through 15-inch diameter classes 



TC4 Total number of trees in the 16-inch through 21-inch diameter classes 



TC5 Total number of trees in the 22-inch through 27-inch diameter classes 



TCg Total number of trees in the 28+-inch diameter classes 



BMDi Basal area in the diameter class of mean stand diameter plus the 



adjacent diameter classes 



BMD2 Basal area in the diameter class of mean stand diameter plus the 



adjoining four diameter classes 



BMD3 Basal area in the diameter class of mean stand diameter plus the 



adjoining six diameter classes 



TMDi Number of trees in the diameter class of mean stand diameter plus 



the adjacent diameter classes 



TMD2 Number of trees in the diameter class of mean stand diameter plus 



the adjoining four diameter classes 



TMD3 Number of trees in the diameter class of mean stand diameter plus the 



adjoining six diameter classes 



80 



