Pole stands - Stocked areas in which a plurality of the total 

 cubic-foot volume is in trees from 5»0 inches in diameter to saw- 

 timber size. 



Seedling-sapling stands - Stocked areas in which the plurality 

 of the total cubic-foot volume is in trees less than $.0 inches 

 in diameter. 



Poorly stocked and deforested areas - Areas with less than: (a) 

 2,000 board feet per acre, (b) 10 percent stocking of pole trees, 

 and (c) 40 percent stocking of seedling- sapling trees. 



Deforested - Areas with less than 2,000 board feet per acre and 

 less than 10 percent stocking of pole and seedling-sapling trees. 



Woodland - Characteristically open stands, chiefly of the ponderosa 

 pine type that average less than 2,000 board-foot volume per acre, 

 are less than 10 percent stocked with pole trees and less than 40 

 percent stocked with seedling- sapling trees. They are fringe 

 forests between prairie and dense forest in which understocking 

 definitely could not be ascribed to cutting or fire. These areas 

 are included in the "poorly stocked and deforested" category in 

 this report. 



Tree-size and -condition classes 

 Sound trees 



Saw-timber - Trees 11,0 inches d.b.h. and larger with at least 

 one 16-foot log and with at least 50 percent (in case of western 

 white pine with at least 40 percent) of the gross cubic-foot 

 tree volume in sound material, 



Pole - Trees $.0 to 10.9 inches d.b.h. without major defect. 



Se e dl ing- s apl ing - Trees up to 4.9 inches d.b.h. that are with- 

 out major defect. 



Cull trees - Trees of any size that do not now, or are not likely 

 to qualify as sound because of major defect - rot, exceptional 

 limbiness, poor form, etc. 



Forest growth 



Gross growth - The average annual increase in sound volume for the 

 specified period before allowance for any drain. 



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