volume includes bark and is classified as follows :- 



Stem wood of good trees under sawiog size Cords 



(table 7) 9, 579, 000 



Tops and limbs of good trees of sawiog size . . . . 15, 512, 500 

 Stems, tops, and limbs of sound cull trees. ... 5, 000, 000 

 Sound portion of stems, tops, and limbs of rot- 

 ten cull trees 875, 000 



Total 30. 966, 500 



FOREST 

 CONDITION 



Under SO* 



og 



s.ze 



Reproduclio 













Nonpfoduct' 







1.000 2.000 3.000 4.000 



MILLION B04R0 FEET (SCRIBNERI 



Figure 6. — Net board-foot volumes on commercial and noncom- 

 mercial forest areas in the different forest conditions 



The cordwood volume in trees under sawiog size 

 does not include the volume of limb wood. In 

 sawlog-size trees the volume includes that portion 

 of the main stem above the usable sawiog limit de- 

 fined on page 20 and also the volume of all hard- 

 wood limb wood over 4 inches in diameter. In 

 sound cull trees, the volume includes the total vol- 

 ume of all stem wood in trees over 5 inches and 

 limb wood in trees of sawiog size. In rotten cull 

 trees the volume includes all sound stem wood in 

 trees over 5 inches and limb wood in trees of saw- 

 log size. 



PULPWOOD AND CHEMICAL-WOOD VOLUMES 



Although the volume of wood now being manu- 

 factured into pulp is limited to small quantities of 

 pine and cottonwood (converted into kraft paper 

 and fiberboard, respectively), a large supply of 

 pulpwood is available in the unit. Table 8 shows 

 that there are 10 million cords in stems of pulping 

 hardwoods and pines. This table is a conversion 



2 Estimates as given here, of cordwood volume in tops and 

 limbs of sawlog-size trees and in the sound portion of cull 

 trees are only approximate. 



into cords of the total stem-wood volume of the 

 stand, including saw timber already covered in 

 other tables. It does not include material in tops 

 of sawlog-size trees or in sound and rotten cull trees. 



GROUP 









rode logs 

 rode logs 



R°n n.im ^^^^H^^l 



1 



1 



Wc:er oaks 



Red oa'.s 



White oaks 



Overcup ook._ 



Ash 



Corrofiwo.^d 



Willow 



Elms 



Tupelo qu.-n _ _ 



Cypress 



Bitter- peca- _ ^ 

 Sv/eer pecan. _ 



Hockberry 



P.nes 









^m[//y>;. ,:-/////,> 



.u'j 



3 







m>>-mm 



'^%^:WMW^. 



mmmm 



m-\ 



] 



^^B High- 

 |:'//-i LO.V-q 



] 



^^H 



^^^^^fty 



^B 



m 



ED 





^1 



' 



ri 



■ 



I 



iw--i 







1.000 

 BOARD FEET 



1,5 00 

 (SCRIBNER) 



Figure 



. — Net board-foot volumes, classified according to /jj 

 grade and species group 



The figures in table 8 include the volume of saw 

 timber and cordwood shown in table 7 classified in 

 cords on the basis of adaptability for pulping proc- 

 esses. In addition to this volume, there is in the 

 survey unit approximately 7 million cords (one- 

 third of the 21 million cords listed on above) in tops 

 of good trees of sawiog size, sound cull trees, and 

 sound parts of rotten cull trees of pulping species. 

 On account of crook, crotch, and general form, 

 however, it is impracticable to work up all of this 

 material for pulpwood. 



Cottonwood and willow are at present the most 

 economically available for pulping because both 

 occur in relatively heavy pure stands and, except 

 for most of such willow as occurs in swamps, are 

 nearly always accessible to water transportation. 

 The other pulping hardwoods are widely distributed 

 throughout the vmit mixed with nonpulping species. 



22 



