Figure 9. — Distribution by area of prevailing 

 age classes and volume, compared with the 

 volume in well-stocked stands {most heavily 

 stocked 10 percent of the stands). Based on 

 turpentine pine type area of 7, 176,000 acres. 

 Measurements are inside bark, on growing- 

 stock trees 5 inches d. b. h. or larger. On the 

 well-stocked area each age class occupies ap- 

 proximately 14.3 percent of the area. 



GROSS VOLUME 



PER ACRE (CUBIC FEET) 



1,000 



10 YEARS 



0-10 1 1-20 



YEARS YEARS 



h 18 -t^9^t 



21-30 



YEARS 



19 — 



31-40 

 YEARS 



41-50 51-60 61-70 91YRS 



YEARS YEARS YEARS 8. OVER 



— 12 — M— 8 — t- 6 -+ 3+3-1- 6—1 



PERCENT OF AREA IN VARIOUS AGE-CLASSES, 1935 



satisfactorily. These practical examples, together 

 with effective educational programs and widely 

 broadened markets for forest products, have caused 

 many landowners to realize the damaging effect 

 of fire and the increasing value of well-stocked 

 forest lands. There is at present, therefore, a wide- 

 spread trend towards better fire protection, im- 

 proved turpentining practices, and better forest 



management, which should increase the quantity 

 and improve the quality of the growing stock and 

 its annual increment of usable material. 



To give an idea of the adequacy of the present 

 turpentine pine forest, distribution of its area and 

 average volume per acre by age class has been 

 compared in figure 9 with those of a well-stocked 

 forest of equal area on 70-year rotation. 



SURVEY UNIT 

 AND SPECIES 



AREA OF DOMINANT SPECIES IN SITE QUALITY CLASS (feet) 



100 + 



90 



Southeast Georgia 



Longleaf 



Slash 



Loblolly 



Southwest Georgia 



Longleaf 



Slash 



Loblolly- 



- 



ffl 



10 10 20 10 20 30 10 20 30 40 50 60 10 20 30 40 50 10 



PERCENT 



Figure 10. — Percent of area dominated by the principal pine species, classified according to site quality {based on height at 50 years), southeast 



and southwest Georgia. 



22V.\:,\°— 41- 



21 



