690 



TIMBER RESOURCES FOR AMERICA'S FUTURE 



Prospective stocking, based on 

 proiimity to seed source 



Longleaf pine _ 



Other southern pines _ 



Distance from 



stocking 



seed source 



expected 



(chains) 



(.percent) 



0-2 



100 



2-3 



90 



3-4 



70 



4-5 



50 



5-6 



30 



6 + 







-2H 



100 



2K2-3K2 



90 



sy2-^i 



70 



Wi-oVi 



50 



5/2-6/2 



30 



6>^-7>^2 



10 



7/2+ 







Oak-Hickory, Oak-Gum-Cypress, and 

 Oak-Pine Type Groups 



Because of the prolific sprouting and seed-bear- 

 ing habits of species associated \vith these type 

 groups, it was assumed that under normal condi- 



tions satisfactory reproduction would become 

 established unless culls, weed trees, grazing, etc., 

 prohibited it. 



Effect of Felling Age 



Table 102 lists the standards used in the south- 

 ern TRR regions for all type groups except the 

 oak-pine. 



In the oak-pine type group on sites that were 

 primarily pine sites, a felling-age factor was 

 applied to pines (table 102) that were cut pre- 

 maturely, but no felling-age factor was applied 

 to hardwoods that were cut. Thus, the produc- 

 tivity rating was not lowered if the cutting of young 

 hardwoods served to stimulate regeneration or 

 growth of pines. 



On sites in the oak-pine type group that were 

 primarily hardwood sites, hardwood felling factors 

 were applied where the cutting of young hardwoods 

 occurred. The hardwood standards of table 90 

 were used. 



Table 102. — Percentage of mean annual growth at culmination attained at various ages, by forest type group 

 and size class oj products cut, South Atlantic, Southeast, and West Gulf Regions 





Loblolly-shortleaf pine ■ 



Longleaf-slash pine ^ 



Oak-hickory 



Oak-gum- 



Age (years) 



Loblolly pine 



Shortleaf pine ' 



Longleaf pine 



Slash 

 pine, * 



saw- 

 timber 



Oak 

 hick 



and 

 ory 



Sweetgum and 

 yellow-poplar 



eypress (all 

 species) 





Saw- 

 timber 



Cord- 

 wood 



Saw- 

 timber 



Cord- 

 wood 



Saw- 

 timber 



Cord- 

 wood 



Saw- 

 timber 



Cord- 

 wood 



Saw- 

 timber 



Cord- 

 wood 



Saw- 

 timber 



Cord- 

 wood 



10 _-__ 



Percent 



Percent 

 42 

 66 

 80 

 90 

 96 

 100 



Percent 



Percent 



Percent 



Percent 



Percent 



Percent 



Percent 



Percent 



Percent 



Percent 



Percent 



15 





28' 



43 



63 



80 



92 



100 



48 

 66 

 82 

 94 

 98 



100 



32" 

 45 



58 

 70 



78 

 84 

 94 

 98 

 100 



48 

 67 

 81 

 89 

 95 



98 

 100 











40 

 60 

 75 

 84 

 90 



95 







20 



33 



57 

 75 



88 



96 

 100 



36 

 60 

 79 

 91 



100 









11' 

 68 



60 



25- 



32" 



43 

 54 

 64 

 72 

 79 

 84 



89 

 91 

 94 

 97 

 100 



43 



62 

 74 



85 



92 



100 



40" 

 60 



75 



30 - 



84 



35 



40.. . . 



90 

 95 



45 





50 



80 



100 



81 



100 



55 













60 

















90 





90 





65 

















70 



















95 





94 





75 



















80 



















100 





98 





85 



















90 























100 





























■ When loblolly pine was the predominating species in 

 the stand, the loblolly standards were used. When 

 shortleaf or other southern pines predominated, the short- 

 leaf standards were used. 



2 When longleaf pine was the predominating species in 



the stand, the longleaf standards were used. When slash 

 pine predominated, the slash pine standards were used. 



' These standards were used for Virginia pine and other 

 southern pines. 



* No deduction for cordwood. 



