3272 Chapter 27 



(excluding foliage) ranged from 307 pounds for Shumard oak to 20 1 pounds for 

 sugarberry; the average was 244 pounds (table 16-10). Dry weights ranged from 

 97 pounds for sweetgum to 185 pounds for Shumard oak and averaged 143 

 pounds. Complete-tree weights of 6-inch hardwoods (including stump and 

 roots) are given in table 16-2 



For small understory hardwoods (table 16-8) in the North Carolina moun- 

 tains and the Georgia Piedmont, average whole-tree weight (ovendry) ranged 

 from 28 pounds for sweetgum to 50 pounds for southern red oak (Phillips 1977). 

 The average diameter of all trees examined was between 2.9 and 3.0 inches. 



In a hardwood plantation established in an Arkansas small stream bottom, 

 average whole-tree weight (ovendry) at age 5 ranged from 1 5 pounds for water 

 oak to 51 pounds for sycamore (Krinard et al. 1979). The average tree size by 

 species ranged from 1.6 inches in dbh (cherrybark oak) to 3.1 inches in dbh 

 (sycamore) and from 13.4 feet in height (Nuttall oak) to 20.5 feet (sycamore). 



Equation 16-1 and the coefficients in table 16-6 can be used to estimate green 

 or dry whole-tree weights of small trees in the following species and species 

 groups: red oaks, white oaks, chestnut oak, black tupelo, red maple, yellow- 

 poplar, hickories, hard hardwoods, and soft hardwoods. The equations were 

 derived from measurement of trees 0.3 to 5.0 cm in dbh growing in natural, 

 even-aged (2 and 6 years) stands in Tennessee (Hitchcock 1978). 



The equation and coefficients in table 1 6-5 predict green and ovendry weights 

 of complete trees, whole trees, and tree components of mockemut hickory, 

 sweetgum, white oak, and southern red oak 3 to 12 inches in dbh from natural 

 lower Piedmont stands near Auburn, Ala. 



A whole-tree weight table (table 16-9) and prediction equations for small 

 Appalachian hardwoods (1 to 10 inches in dbh) were developed based on a 

 sample of 200 trees of 17 species from a site in central West Virginia (Wartluft 

 1977). Average green weight of the trees (all material above a 6-inch stump) was 

 434 pounds, 80 percent of which was in material greater than 3 inches dob. The 

 weighted average moisture content of the 200 trees was 69 percent, ovendry 

 basis. The prediction equations are as follows: 



Ln(GWT) =1.54934 + 2.39376 Ln(dbh) 

 Ln(OGWT) =0.95595 + 2.42640 Ln(dbh) 

 PG =0.83059 - 14.57918 x e-'^^^^ 

 where: 



GWT = whole-tree green weight (pounds) 

 OGWT = whole-tree ovendry weight (pounds) 



dbh = diameter breast height (1 inch ^ dbh ^ 10 inches) 

 Ln = natural logarithm function 

 PG = proportion of weight in material > 3 inches dob. 



Equation 27-27 is used for both green and ovendry weights. 



Hughes (1978) sampled 248 trees in an uneven-aged, pine-hardwood stand 

 in Caldwell Parish, La. , and published equations for estimating the weight of the 



