Figure 29. — Distribution of area and board-foot volume in the sawlog-size conditions according to the volume of saw timber per acre, 1938. 



board feet per acre or better and these stands contain 

 about nine-tenths ot the volume in each type group (fig. 

 29). About one-fifth of the total saw-timber area, 2 

 million acres, bears more than 6,000 teet per acre and 

 embraces one-halt ot the board-foot volume in the sawlog- 

 size conditions. Stands stocked with less than 2,000 

 feet per acre occupy about one-third of the sawlog-size 

 area in both the pine and hardwcod types, but they contain 

 only one-tenth ot the saw timber. 



Average volumes per acre are usually largest in the 

 loblolly pine type (table IS). The 15,390 board feet per 

 acre ot old-growth uncut stands occurs on less than 

 100,000 acres. More important from the commercial 

 point of view is the 5,670 board feet per acre in second- 

 growth uncut stands ot loblollv that represents 1.5 million 

 acres. All together the sawlog-size loblolly pine stands, 

 totaling 3.2 million acres, average 5,130 feet per acre 

 and contain 40 percent ot the total saw-timber volume. 



Table 15. 



verage boar 



d-foot volume * per acre, total area, and total volume of the sawlog-size conditions bv forest type, 1938 



Forest type 



Old growth 



Uncut 



Second growth 



Partly cut j Uncut 



Partly cut 



All sawlog 

 conditions 



Total area Total volume 



Loblolly pine __. 



Shortleaf pine 



Pond pine 



Longleaf pine 



Virginia pine 



White pine 2 



Cove hardwoods. . . 

 Bottom-land hardwoods 

 Upland hardwoods 



All types 



Board feet 

 15,390 

 11,510 

 3,150 

 4,780 

 8,840 

 9,100 

 11.000 

 9,740 

 5,700 



Board feet 

 7,830 

 5,550 

 2,790 

 3, 510 

 4,560 

 8,080 

 5, 020 

 6,380 

 3,810 



Board feet 

 5,670 

 4,320 

 2,400 

 2,290 

 3,570 

 3,890 

 3,930 

 3,950 

 2,110 



Board feet 

 3,510 

 2,690 

 1,940 

 2,070 

 2,760 

 2,910 

 2,440 

 2,940 

 1,750 



Board feet 

 5,130 

 4,060 

 2,480 

 2,700 

 3,410 

 4,820 

 4,360 

 5,620 

 2,730 



Acres 



3, 214. 400 



1, 718, 400 



650, 700 



212. 400 



326, 900 



199. 700 



182, 300 



1, 466, 100 



1, 672. 600 



A/ board feel 



16, 475. 600 



6. 971, 700 



1.615.800 



572, 900 



1. 113. 600 



962, 500 



795, 700 



8, 234, 200 



4, 560. 800 



8,820 



5. 470 



4,140 



2,910 



9, 643. 500 



41, 302, 800 



> Net volumes by the International i-i-inch log rule. 

 1 Includes spruce-fir and hemlock types. 



32 



