Table 8. — Net volume in 



Doyle rule classified according to diameter class and forest condition 









Old growth 



Second growth 



All forest co 





Species and diameter (inches) 



Uncut 



Partly cut 



Sawlog size 



Under saw- 

 log size i 



editions 





Uncut 



Partly cut 





Pines: 



10 and 12 



M board feet 

 110,300 

 223, 900 

 289,100 

 554, 500 



At board feet 

 94, 500 

 175, 800 

 149, 800 

 195,000 



M board feet 



1, 520, 400 



1,622,900 



745, 100 



400, 800 



M board feet 



428, 800 



269, 000 



80,600 



40, 400 



M board feet 



143,600 



42,500 



5,500 



M board feet 

 2, 297, 600 

 2, 334, 100 

 1, 270, 100 

 1, 190, 700 



Percent 

 18.8 



14 and 16 



19.0 



18and20 



10.4 



22 and more, .. _ 



9.7 









Total 



1, 177, 800 



615, 100 



4, 289. 200 



818, 800 



191,600 



7, 092, 500 



57.9 







Hardwoods: 



10 and 12! _ _ 



3,200 



501, 900 



1, 125, 300 



4,100 

 407, 400 

 665, 600 



2,900 



1, 052, 700 



737, 400 



800 

 316, 300 

 223, 500 



1,200 



99, 500 

 17, 100 



12,200 

 2, 377, 800 

 2, 768, 900 



.1 



14, 16, and 18 



19.4 



20 and more 



22.6 







Total 



1, 630, 400 



1,077,100 



1,793,000 



540, 600 



117, 800 



5, 158, 900 



42.1 







All species . 



2, 808, 200 



Percent 



16.6 

 31.6 



1, 692, 200 



Percent 



8.7 

 20.9 



6, 082, 200 



Percent 



60.5 

 34.7 



1,359,400 



Percent 

 11.5 

 10.5 



309,400 



Percent 



2.7 

 2.3 



12, 251, 400 



100.0 



Summary: 



Pines ._ . 



100.0 







100.0 









1 Includes uncut, partly cut, clear cut, and reproduction. 



1 Cypress only. 



Figure 8 indicates for the pines and three selected 

 hardwoods combined (red gum, red oak, and white 

 oak) the percent of tree and log grades occurring 



OLO GROWTH SECOND GROWTH 



OLD GROWTH SECOND GROWTH 



GRADE 2 V y- ','.'■ \J GRADE 3 



Figure 8. — Percent of tree grades (pines) and log grades (hard- 

 woods) in two forest conditions 



in the old-growth and second-growth conditions. 

 This figure represents observations on a relatively 

 small number of trees and should be used as a 

 general index rather than as an exact portrayal 

 of grades existing within the unit. 



Cordwood Volume 



The total cordwood volume in the unit is 98 

 million cords, of which 44 million cords are saw- 

 timber volume found in merchantable trees. The 

 remaining sound non-saw-timber volume, which is 

 suitable for pulpwood, fuel wood, distillation 

 wood, and other miscellaneous uses, but of little 

 or no value for saw timber, is expressed in table 9 

 in terms of cords of standard size (4 by 4 by 8 

 feet), including bark. It is found in the stems of 

 sound trees under sawlog size, in the tops of sawlog- 

 size trees, and in the sound portions of trees classi- 

 fied as culls. Volume of trees under sawlog size 

 is that of the stem only, taken to a flexible (mini- 

 mum 4-inch) top. Volume in the tops of trees of 

 sawlog size includes the upper stem only of pines 

 but the upper stem plus lumbs (4-inch and larger) 

 of hardwoods. Similarly, in the pines the volume 

 in sound and rotten cull trees includes only the 

 sound material in the stems, while in the hard- 

 woods it includes that in both stems and limbs. 



Table 9 shows this net volume of sound material 

 to be 53% million cords, of which about 54 percent 

 is in sound trees under sawlog size, 27 percent in 

 tops of sawlog-size trees, and 19 percent in sound 

 and rotten culls. Although there are 29 million 

 cords of material in sound trees under sawlog 



18 



