54 



TIMBER RESOURCES FOR AMERICAS FUTURE 



Table 34.- 



-Total residues, 



1952 







Plant residues 



LoRging 



Unused 



residues 













Souree 







residues 





Rela- 





Used 



Un\ised 





Total 



tion to 



timber 



cut 





Million 



Million 



Million 



Million 







Cll. ft. 



cu. ft. 



cu. ft. 



cu. ft. 



Percent 



Lumber 



1, 619 



1.331 



1,020 



2, 351 



134 



Veneer 



180 



25 



100 



125 



25 



Cooperage 



27 



13 



33 



46 



44 



Pulp 



170 





72 



72 



4 



Others 



36 



13 



139 



152 



9 



Total 



2,032 



1,382 



1,364 



2,746 



1 26 



North 



328 



143 



212 



355 



18 



South 



758 



716 



706 



1.422 



28 



West and 













Coastal 













Alaska 



946 



523 



446 



969 



1 26 



Total 



2,032 



1, 382 



1,364 



2, 746 



1 26 



1 These percents may be 1 or 2 percent high because 

 plant residues include amounts from not only domestic 

 timber cut but also foreign and nongrowing-stock sources. 



2 Includes shingle mills, box board, small dimension, 

 turnery, and excelsior plants, and other similar establish- 

 ments utilizing roundwood. 



provement in utilization. The availability of 2.7 

 million cubic feet of unused wood residue offers a 

 tremendous opportunity to our research and in- 

 dustrial agencies. 



Growth, Cut, and Volume Relations 

 Summarized 



For ready comparisons of the more significant 

 facts on timber volumes with those on growth and 

 cut, three summaries follow which show^ the rela- 

 tive importance of: (1) Hardwoods and softwoods 

 in terms of forest area, sawtimber volume, grow^th 

 and cut; (2) East and West in the same terms; and 

 (3) the five principal species or species groups, 

 in terms of volume, growth, and cut. 



The hardwood forest types, which cover about 

 half the commercial forest area, support only 20 

 percent of the sawtimber volume, supply 41 per- 

 cent of the growth but only 25 percent of the cut. 

 Conversely, the softwood types, likewise covermg 

 about half the commercial forest area, support 80 

 percent of the sawtimber volume but hn-nish only 

 59 percent of the growth while yielding 75 percent 

 of the cut: 



Softwood Hardwood 

 (.percent) (percent) 



Forest types on commercial forest land. 52 48 



Live sawtimber volume 80 20 



Net annual growth of sawtimber 59 41 



.\nnual cut of sawtimber 75 25 



On an East- West breakdo^\'n, the East has 75 

 percent of the forest area but supports only 30 

 percent of the volume. Its growth is 76 percent 

 of the total, 3"et it yields only 54 percent of the 

 total cut. Conversely, the West has one-fourth 

 of the area and one-fourth of the growth, but it 

 has 70 percent of the volume and almost half 

 the cut: 



West and 

 Coastal 

 East (per- Alaska 

 cent) (percent) 



Commercial forest area 75 25 



Live sawtimber volume 30 70 



Net annual growth of sawtimber 76 24 



Annual cut of sawtimber 54 46 



Five of the leading species or species groups, in 

 terms of both growing stock and sawtimber 

 volume, are Douglas-fir, ponderosa and Jeffrey 

 pines, western true firs, southern yellow pines, 

 and the oaks. These account for 61 percent of 

 the sawtimber volume and growth and 68 percent 

 of the cut. Variations between species, however, 

 are of most significance. The southern yellow 

 pines with only 8 percent of the live sawtimber 

 volume supply 24 percent of the cut and 30 percent 

 of the growth, whereas Douglas-fir with one-fourth 

 of the volume and one-foiu"th of the cut represents 

 about one-tenth of the growth (table 35 and fig. 

 25). 



In terms of growmg stock, southern j^ellow pines 

 with 9 percent of the volume account for about a 

 quarter of both the growth and the cut. The 

 oaks with 10 percent of the volume account for 12 

 percent of the cut and 17 percent of the growth. 



It is apparent from these comparisons, and 

 others that can be drawn from table 35, that a 



Table 35. — Comparison of volume, growth, and cut 

 by principal species groups, 1952 



LIVE SAWTIMBER 



Species group 



Volume 



Growth 



Cut 



Douglas-fir 



Ponderosa and Jeffrey pines-_ 

 Western true firs 



Percent 



26 



11 



9 



8 



7 



Percent 



9 



4 



3 



30 



15 



Percent 



24 



7 



3 



Southern yellow pines 



Oaks 



24 

 10 



Total 



61 



61 



68 



GROWING STOCK 







Douglas- fir 



Percent 



19 



10 



9 



8 



7 



Percent 



6 



17 



24 



3 



2 



Percent 

 IS 



Oaks 



12 



Southern yellow pines 



Ponderosa and Jeffrey pines -_ 

 Western true firs 



28 

 6 

 2 



Total 



53 



52 



6() 



mmm 



