APPENDIX DEFINITIONS 



which are of the following minimum diameters 

 at breast height: 



Eastern regions: Softwoods 9.0 inches 



Hardwoods 11.0 inches. 



Western regions: All species 11.0 inches. 



Poletimber trees. Trees of commercial spe- 

 cies which meet regional specifications of sound- 

 ness and form, and which are of the following 

 diameters at breast height: 



Eastern regions: Softwoods 5.0 to 9.0 inches 



Hardwoods 5.0 to 11.0 inches. 

 Western regions: All species 5.0 to 11.0 inches. 



Seedling and sapling trees. Live trees of 

 commercial species, less than 5.0 inches in 



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diameter at breast height, and of good form 



and vigor. 



Unproductive forest land area. See Forest land 

 area. 



Upper stem portion (sawtimber trees). The 

 portion of sawtimber trees between merchantable 

 top and a point on the bole with a minimum top 

 4.0 inches in diameter inside bark when it exists. 



Well- and medium-stocked stands. See 

 Stocking. 



Young-growth sawtimber stands. Sawtimber 

 stands in which 50 percent or more of the net 

 board-foot volume is in young-growth sawtimber 

 trees. 



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