Measures and yields of products and residues 3325 



Operations have been completed. To do this, they need to know the diameter at 

 breast height of trees cut at various stump heights so that suitable volume tables 

 can be applied. Several studies have explored the relationship of stump size to 

 dbh. After measuring over 14,000 standing trees in the Carolinas and Virginia, 

 McClure (1968) developed equations for predicting dbh from stump diameter 

 and height for each of 53 southeastern tree species; his equations for 18 hard- 

 woods are presented in table 27-138. Tables relating stump size to dbh were 

 compiled by McCormack (1953) for hardwoods as a group in Georgia and North 

 Carolina (table 27-139) and by Vimmerstedt (1957) for nine species and species 

 groups in the southern Appalachians (table 27-140). 



BARK 



Data on bark are found principally in chapter 13 and in section 16-1. Briefly, 

 for 6-inch hardwoods found on southern pine sites, stembark averages about 

 13.1 percent and branchbark about 2.4 percent of the foliage-free ovendry 

 weight of above-ground tree portions (table 16-10). The range for stembark was 

 from 8.1 percent (winged elm) to 19.3 percent (blackjack oak); the range for 

 branchbark was from 1 .9 percent (Shumard and cherrybark oaks) to 3.9 percent 

 (post oak). 



Bark volume and weight data are primarily in chapter 13 but some are also 

 in section 16-1. Section 13-3, BARK VOLUME AND WEIGHT, contains the 

 following subsections: 



• BARK VOLUME AND WEIGHT PER ACRE, Page 1138 



• BARK VOLUME AND WEIGHT PER TREE, Page 1141 



• BARK VOLUME AND WEIGHT PER LOG, Page 1162 



• BARK VOLUME AND WEIGHT PER STANDARD ROUGH CORD, 

 Page 1167 



• BARK WEIGHT PER Mbf LOG SCALE, Page 1171 



• BARK WEIGHT PER Mbf LUMBER SCALE, Page 1174 



Section 16-1 data on bark volume and weight can mainly be found in the 

 following tables: 



Subject and species Table No. 



Percentage of above-ground biomass/tree comprised of bark of 22 species; trees 6 



inches in dbh 16-10 



Weight per tree of stem bark 16-13 



Ash, green 



Elm, American 



Sugarberry 



Sweetgum 

 Weight per tree of bark in stem, crown, and complete tree 16-14 



Black oak 

 Weight per tree of bark in stem, branches, and whole tree above ground 16-17 



Chestnut oak 

 Same, but for: 



Sweetgum 16-26 



Weight per tree of bark of whole tree above ground 16-27 



Yellow-poplar 

 Equations to predict weight per tree of bark in merchantable stem, stem to a 2-inch 



top, branches, and whole tree above ground 16-29 



Yellow-poplar 

 Same, but for volume 16-30 



Yellow-poplar 



