Definition of Terms 



COMMERCIAL FOREST LAND 



Land capable of producing commercial timber and economically accessible, 

 now or prospectively, and not reserved from cutting. 



Stocked Commercial Forest 



Areas with generally 3 or 4 thousand board feet ~ij (depending upon 

 forest typo and regional practice) of sawtimber per acre; or areas 

 that are more than 10 percent stocked with poles, seedlings, or sap- 

 lings . 



Commercial stands are grouped into 10 forest types as follow: 



Western white pine - Stands in which western white pine constitutes 

 20 percent or more of the total net cubic volume. This type is 

 given priority over all others. The minimum volume for a sawtimber 

 stand is generally 4 thousand board feet per acre. 



Ponderosa pine - Stands in which ponderosa pine constitutes 25 per- 

 cent or more of the total net cubic volume. This type is given 

 priority over all others except white pine. The minimum volume 

 for a sawtimber stand is generally 3 thousand board feet per acre. 



Larch-Douglas-fir - Stands in which larch and Douglas-fir consti- 

 tute 75 percent or more of the total net cubic volume. At least 

 10 percent of the total volume is larch. The minimum volume for 

 a sawtimber stand is generally 4 thousand board feet per acre. 



Hemlock-grand fir - Stands in which hemlock and grand fir, either 

 separately or combined, constitute 50 percent or more of the total 

 net cubic volume. The minimum volume for a sawtimber stand is gen- 

 erally 4 thousand board feet per acre. 



Douglas-fir - Stands in which Douglas-fir constitutes 60 percent 

 or more of the total net cubic volume. The minimum volume for a 

 sawtimber stand is generally 4 thousand board feet per acre. 



Engelmann spruce - Stands in which Engelmann spruce constitutes 50 

 percent or more of the total net cubic volume. The minimum volume 

 for a sawtimber stand is generally 4 thousand board feet per acre. 



1/ All references to board-foot volume are in Scribner rule standards. 



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