em 
OREST increment, as used in this report, is the 
difference between the net volumes of growing stock 
“¢ of usable size at the beginning and end of a year, 
“before deducting the commodity drain. Board-foot incre- 
‘ment is made up of the growth on sawlog-size trees plus 
the board-foot volume of trees reaching sawlog size during 
the year, minus deductions for mortality. Cordwood in- 
crement represents (1) the growth on the sound-stem wood 
of pines 5.0 inches d..b. h. and larger, on under-sawlog- 
size hardwoods (including cypress), and on the sawlog por- 
a tion of hardwoods 13.0 inches d. b. h. and larger; (2) plus 
the total volume in pines and hardwoods that became 5.0 
inches d. b. h. or larger during the year; and (3) minus 
deductions for mortality. In no calculations are cull trees 
or the upper stems and limbs of sawlog-size hardwoods 
considered. 
ReEsouRcES 
eps 
fa 
ate rte ss 
Ty ae 
} 7~ Z Ls 
rk, ; 
- ‘ - al 
~ 
> oJ mint ae ; 
ALON +, D Eee isk Re cers 
Forest Increment 
Kk 
3,363.7 million board 
feet (lumber tally), and the mortality 861.6 million feet, 
In 1937, the gross growth was 
leaving a net increment of 2,502.1 million. “The net incre- 
ment for all growing-stock material of trees 5.0 inches 
d. b. h. and larger amounted to 643 million cubic feet, 
bark excluded, or almost 9 million cords, including the 
bark. Georgia had a greater net forest increment in 1937 
than any other State in the lower South. 
In south Georgia during 1934, less than 8 percent of the 
net increment of saw-timber material occurred in old- 
growth stands; 58 percent was in second-growth stands of 
sawlog timber, and 34 percent in stands under sawlog size 
(table 19). 
pine, pines made up 71 percent of the net saw-timber in- 
In central and north Georgia in 1936, about 80 
Of the 2-million- 
Despite a net loss for the year in old-growth 
crement. 
percent of the increment was in pines. 
Taste 19.—WNet increment in board feet, cubic feet, and cords} 
Saw-timber material (lumber tally) 
All material—cubic volume (inside bark) 
Cordwood volume (outside bark)—in- 
cluding saw timber 
Area and forest condition ? 
A ‘ 
Pine | aed Total increment Pine eae: | Total increment Pine Laat | Total increment 
; 
| | 
, M board | Mboard | M board | M cubic | M cubic | M cubic / ; 
South Georgia, 1934: feet feet | feet | Percent feet feet feet | Percent Cords | Cords Cords Percent 
; CLG Lai an ee ee ee — 38, 800 86, 600 47,800 | 7.8 —13, 210 19, 040 © 5, 830 4.2 —162,300 | 287, 400 125, 100 4.0 
Second growth: | } 
SSwlow sia = ~- so. eae sl 280, 100 79, 400 359, 500 58.4 39,480 | 31, 130 70, 610 50.3 545, 800 482,300 1,028, 100 49.3 
_ Under sawlog size__-_--__-- 196, 200 11, 600 207, 800 33.8 54, 740 9,180 | 63, 920 45.5 786, 400 145,000 931, 400 | 4.7 
bn =i Se) | oo i oo se... : Me ee 
437,500 | 177, 600 615, 100 — 81,010 59, 350 140, 360 1,169,900 | 914,700 2,084,600 |. .....- 
; | | | | 
All conditions... ---..--......... || Percent | Percent | Percent | Percent | Percent | Percent 
f W1. 1 28.9 100. 0 57.7 | 42.3 100. 0 56.1 | 48.9 100.0 
4 —s es |= = = 2 = = = —— = 
Central, north-central, and north | \M board | M board M cubic M cubic 
Georgia, 1936: | Jeet feet | feet feet Cords Cords 
Old growmpi. 25 18, 600 83, 200 101, 800 5. 6 | 3, 710 21, 890 25,600 5.6 48,100 | 327,000 375, 100 3.9 
Second growth: | 
Bavwiloe sive... o6- 2c... 969, 200 230, 900 |1, 200, 100 66.6 178, 780 76, 130 2h, 910 56.0 | 2,338,000 1,163,300 3, 501, 300 
Under sawlog size... _. 449,900 | 51,300 | 501,200) 27.8 | 140,440 | 34,610 | 175, 050 38.4 | 1,918,600 | 544,700 (2, 463, S00 s 
1, 437, 7 365, 400 A, 803, 100 | 322,930 | 132,630 | 455, 560 4, 304, 700 2, 035, 000 6, S89, Tux 
All conditions... -_-._.------.__. -\) Percent | Percent | | Percent | Percent Percent Percent 
79.7 20.3 | 100. 0 70.9) 20.1 100. 0 67.9 2 
7 
; / 
4 7 “Under sawlog size” includes reproduction and clear-cut areas, 
 ® Including cypress. 
4, 
_ ! Detail by separate units given in table 48, appendix, for saw timber and cordwood. 
23 
