Tree Classes 



Sawtimber trees. — A live softwood (coniferous) 

 tree at least 9 inches d. b. h. or live hardwood (broad- 

 leaf) tree at least 1 1 inches d. b. h. of commercial 

 species, with a sound butt log at least 8 feet long, or 

 with at least half of the gross volume of the tree in 

 sound material. 



Large sawtimber trees. — Hardwood and softwood 

 sawtimber trees 15.0 inches d. b. h. and larger. 



Small sawtimber trees. — Hardwood and softwood 

 sawtimber trees less than 15.0 inches d. b. h. 

 PoLETiMBER TREES. — Trccs of Commercial species 

 which meet regional specifications of soundness and 

 form and are of the following diameters at breast 

 height: softwoods, 5 to 9 inches; hardwoods, 5 to 11 

 inches. 



Seedling and sapling trees. — Live trees of com- 

 mercial species less than 5.0 inches in diameter at 

 breast height, and of good form and vigor. 



Cull trees. — Live trees of sawtimber or poletimber 

 size that are unmerchantable for sawlogs now or 

 prospectively because of defect, rot, or species (such as 

 sumac, redbud, and hophornbeam). 



Rotten cull trees. — Live trees of sawtimber size 

 that have less than 50 percent of their gross volume 

 in sound material; live trees of poletimber size 

 that have any unsound defect. 



Sound cull trees. — Live trees of sawtimber or 

 poletimber size that are free from unsound defect 

 but will not make at least one merchantable saw- 

 log now or prospectively because of roughness, 

 poor form, or species. 



Volumes 



All-timber volume. — Net volume in cubic feet of 

 live sawtimber trees and poletimber trees of commer- 

 cial species, and cull trees of all species from stump 

 to a minimum 4.0-inch top inside bark. Includes bole 

 only of softwoods but both bole and limbs of hard- 

 woods to a minimum 4.0-inch diameter inside bark. 



Live sawtimber volume. — Net volume in board- 

 feet. International }4-inch rule, of live sawtimber trees 

 of commercial species to a inerchantable top. 



Merchantable top. — The point on the bole of 

 sawtimber trees above which a minimum mer- 

 chantable sawlog cannot be produced. 



Growing-stock volume. — Net volume in cubic 

 feet of live sawtimber trees and live poletimber trees 

 from stump to a minimum 4.0-inch top (of central 

 stem) inside bark. 



Hardwood limbs. — Limbs of live hardwood saw- 

 timber trees and sawtimber size cull hardwood trees 

 to a minimum diameter of 4.0 inches inside bark. 



LTpPER stem portion. — Net volume in cubic feet of 

 sawtimber tree boles between merchantable top and 

 a point on the bole with a minimum top 4.0 inches in 

 diameter inside bark when it exists. 



Stocking 



Stocking is the extent to which growing space is 

 effectively utilized by present or potential growing- 

 stock trees of commercial species. "Degree of stock- 

 ing" is synonymous with "percent of growing space 

 occupied" and means the ratio of actual stocking to 

 full stocking for comparable sites and stands. 



Well-stocked stands. — Stands that are 70 percent 

 or more stocked with present or potential growing- 

 stock trees. 



Medium-stocked stands. — Stands that are 40 to 69 

 percent stocked with present or potential growing- 

 stock trees. 



Poorly stocked stands. — Stands that are 10 to 39 

 percent stocked with present or potential growing- 

 stock trees. 



Nonstocked area. — Areas that are to 10 percent 

 stocked with present or potential growing-stock 

 trees. 



Forest Site 



Site class was determined by the average number 

 of 16-foot merchantable logs that an area is capable 

 of producing in mature trees. All stem sections one- 

 half log (8 feet) in length or longer, suitable for cross- 

 ties or rough lumber were considered to be merchant- 

 able. Merchantable heights were estimated to the 

 nearest one-half log. Where mature trees were not 

 present, site was estimated from soil and moisture 

 conditions, topography, exposure, and appearance 

 of vegetation. The following site classes were recog- 

 nized: 



Very good. — Areas that can produce hardwood 

 trees averaging 3 or more logs at maturity. 



Good. — Areas that can produce hardwood trees 

 averaging 2 to 2)2 logs at maturity. 



Fair. — Areas that can produce hardwood trees 

 averaging 1 to I/2 logs at maturity. 



Poor. — Areas that can produce hardwood trees 

 averaging one-half log at maturity. 



Indiana's Forest Resources and Industries 



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