944 



A NATIONAL PLAN FOR AMERICAN FORESTRY 



TABLE 13. Timber stands and current annual increments, by classes of stands, in 



Union Parish, La. 1 



1 Data from the Southern Forest Experiment Station. 

 3 Volumes by International one-eighth inch log rule. 



The excellent growth in well-stocked stands is worthy of special 

 attention. It is very plain that the owner of poorly stocked stands 



6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 SMALL MEDIUM LARGE 



3,000 



2POO 



1,000 



6 8 10 12 14 16 18 20 22 24 26 26 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 SMALL MEDIUM LARGE 



DIAMETER BREAST HIGH (INCHES) * 



TIMBER GROUP TOTALS 



EXISTING GROWING STOCK, SHORTLEAf AND LOBLOLLY PINE 

 EXISTING GROWING STOCK, HARDWOODS 



EXISTING GROWING SUPPRESSED OR DErECTIVE PINE AND HARDWOOD 

 SUGGESTED LIMITS FOR PERMANENT GROWING STOCK 



FIGURE 14. Distribution of cubic volume by diameter classes on average acre of shortleaf-loblolly pine 

 and hardwood stands. A, Poorly stocked stands said to represent average conditions on 7,000,000 acres 

 in southern Arkansas, northern Louisiana, and eastern Texas; B, well-stocked stands average from an 

 inventory of 28,900 acres said to be representative of 600,000 acres in southern Arkansas, northern Loui- 

 siana, and eastern Texas. There are sufficient trees in the stand but it should be managed toward a 

 larger proportion of larger size classes. 



has to pay taxes and the expenses of fire protection and administration 

 on more than 2 acres to obtain production equal to that of 1 acre of 

 well-stocked stands. 



