wood; much of it is in trees that are now too small 

 for these commodities but that constitute the grow- 

 ing stock for the future supply; and much of it is in 

 working longleaf and slash pines or in round trees 

 that will undoubtedly be turpentined before being 

 cut for wood products. Industries dependent upon 

 pulpwood must appreciate, therefore, that only a 

 small part of the volume shown in table 17 is free 

 from competitive requirements of other consumers 

 and can be used for pulpwood without reducing 

 the growing stock and seriously endangering the 

 continuity of the future timber supply in the area. 



From the viewpoint of the conservationist, the 

 pulpwood supply in south Georgia would come 

 logically from the worked-out turpentine pines, 

 from cull trees, from trees of inferior species, 

 from thinnings of dense stands, and from the salvage 

 of material usually wasted in the cutting of other 

 products. Approximately 32 percent of the turpen- 

 tine area, or over 2^ million acres, was classified 

 as worked-out or resting. On this area and on the 

 area being worked for naval stores almost 6 million 

 cords of worked-out naval stores timber has accu- 

 mulated that has little value (or prospect of utili- 

 zation) other than for pulpwood products, and 

 each year a million cords are being added. Nearly 

 7 million cords, or 86 percent, of the total cordwood 

 volume in cull trees is in the tupelos, sweetgum, 

 southern sweetbay, red maple, southern magnolia, 

 and other soft-textured hardwoods. Recent trends 

 point to their fuller use in the future. 



A steady market for pulpwood should justify 

 more intensive management, whereby thinnings 

 and improvement cuttings and salvage of waste 

 might be made profitably. Furthermore, the 

 utilization of worked-out naval stores pines and 

 cull trees would make room for reproduction and 

 at the same time stimulate growth on the opened 

 stands. 



Forest Increment 



The annual increment, as considered in this 

 report, is the difference between the volume of the 

 sound-tree stand at the beginning of a year, and 

 the corresponding volume at the end of the year 

 before deducting for commodity drain during that 

 period. This difference in stand volume is a result 

 of the interaction of growth and mortality. 



Natural factors which influence the rate of growth 

 of each species are site quality, density of stand, 



forest condition, and age. Factors which contribute 

 to mortality are fire, insects, disease, windstorms, 

 turpentining, and natural crowding. It is assumed 

 that once a tree is cupped for naval stores it will 

 continue to be used for this purpose until worked 

 out. That portion of the turpentine butt volume 

 which eventually will be lost as a result of turpen- 

 tining is therefore deducted from the growth 

 when the cup is first hung. 



Board-foot and Cordwood Increment 



The net board-foot and cordwood increments for 

 1934 are classified according to forest condition and 

 species group in table 18. The board-foot incre- 

 ment includes the volume of those trees that reach 

 saw-timber size during the year, plus the increase 

 in volume of trees of saw-timber size, less the volume 

 of saw-timber trees which died during the year. 

 The cordwood increment similarly includes the 



Table 18. — Net increment, classified according to forest condition 

 and species group, 7934 



Kind of increment and forest 

 condition 



Pines 



Hard- 

 woods 



Cy- 

 press 



All 

 species 

 groups 



Board-foot increment I (lumber 

 tally): 

 Old growth 



M board 



jeet 

 -38, 800 



280, 100 



190, 800 



5,400 



SI board 

 jeet 

 82, 100 



72, 700 



8,200 



400 



M board 

 jeet 

 4,500 



6,700 



2,900 



100 



M board 

 jeet 

 47, 800 



Second growth: 



Sawlog size 



Under sawlog size 



Reproduction and clear-cut.. 



359, 500 



201. 900 



5,900 



All conditions... 



437, 500 



163, 400 



14, 200 



615, 100 



Cordwood increment 2 (includ- 

 ing bark): 



Cords 

 -162, 300 



545,800 



781. 300 



5,100 



Cords 

 278, 000 



464, 400 



129, 100 



2,600 



Cords 

 9,400 



17.900 



13. 200 



100 



Cords 



125, 100 



Second growth: 



Sawlog size 



Under sawlog size 

 Reproduction and clear-cut.. 



1, 028, 100 



923, 600 



7,800 



All conditions. ... ... .. 



1. 169. 900 



874, 100 



40, 600 



2, 084, 600 



i Net increases in volume of saw-timber material. 

 1 Net increases in saw-timber material and upper stems of sawlog size 

 pines; also in sound trees 5 inches d. b. h. and up to sawlog size. 



Table 19. — Net increment classified according to species group, 

 1934-36 



Kind of increment and year 



Pine 



Hard- 

 wood 



Cy- 

 press 



All 

 species 



Board-foot increment (lum- 

 ber tally) : 



1934 ... - 



M board 

 feet 

 437, 500 

 468, 900 

 458, 900 



M cubic 

 feet 

 81,010 

 95, 930 

 98, 100 



A/ board 

 feet 

 163, 400 



163, 900 



164, 200 



M cubic 

 feet 

 56, 450 

 57,910 

 58, 450 



M board 

 feet 

 14,200 

 14, 200 

 14,300 



SI cubic 

 feet 

 2,900 

 2,950 

 2,990 



M board 

 feet 

 615, 100 



1935 



647, 000 



1936 ... 



637, 400 



Cubic-foot increment (inside 

 bark): 



1934 . . 



M cubic 

 feet 

 140,360 



1935 



156, 790 



1936 



159, 540 







41 



