APPENDIX I. FOREST STATISTICS, 1970 



251 



Table 11. — Net volume of growing stock on commercial timberland in the United States, by diameter class, softwoods and 

 hardwoods, and timber supply region, as of December 31, 1952 and 1962, and January 1, 1970 1 



[Million cubic feet] 

 SOFTWOOD GROWING STOCK 





Year 



Total 



Diameter class (inches) 



Timber supply region 



5.0 to 7.0 



7.0 to 9.0 



9.0 to 

 11.0 



11.0 to 

 13.0 



13.0 to 

 15.0 



15.0 to 

 17.0 



17.0 to 

 19.0 



19.0 to 

 21.0 



21.0 to 

 29.0 



29.0+ 





1970 

 1962 

 1952 



26,884 

 23, 672 

 20, 027 



6,936 

 6,065 

 4,627 



6,559 

 5,696 

 4,734 



4,720 

 3,996 

 3,146 



3,235 



2,817 

 2,497 



2,111 

 1, 913 

 1,791 



1,361 

 1,248 

 1,190 



793 

 742 

 720 



480 

 484 

 527 



611 

 623 

 701 



74 





84 

 90 





1970 

 1962 

 1952 



12, 229 

 10,347 

 7,749 



3,321 

 2,993 

 2,207 



3,008 

 2,579 

 1, 925 



1,919 

 1,588 

 1,196 



1,320 



1,085 



854 



873 

 697 

 535 



632 

 495 

 329 



420 

 325 

 232 



300 

 219 



172 



376 

 316 



259 



55 





46 

 35 



Total, North 



1970 

 1962 

 1952 



39,114 

 34, 020 

 27, 777 



10,257 

 9,058 

 6,835 



9,567 

 8,276 

 6,659 



6,610 

 5,585 

 4,343 



4,556 

 3,902 

 3,352 



2,984 

 2,611 

 2,326 



1,994 

 1,744 

 1,520 



1,213 



1,067 



953 



780 

 703 

 699 



988 

 939 

 961 



130 





130 

 126 





1970 

 1962 

 1952 



37, 837 

 33, 692 

 30, 694 



4,905 

 4,285 

 3,687 



6,817 

 6, 292 

 5,805 



7,422 

 6,815 

 6,405 



6,621 

 6,056 

 5,669 



4,883 

 4,243 

 3,766 



3,138 

 2,646 

 2,289 



1,869 

 1,536 

 1,305 



1,007 

 826 

 720 



1,023 

 864 

 908 



149 





127 

 134 





1970 

 1962 

 1952 



40, 567 

 33, 094 



24, 421 



3,924 

 3,307 

 2,531 



5,789 

 4,845 

 3,740 



6,677 

 5,681 

 4,462 



6,814 

 5,611 

 4,254 



5,982 

 4,695 

 3,409 



4,498 

 3,622 

 2,516 



2,929 

 2,365 

 1,622 



1,869 



1,422 



874 



1,903 



1,415 



889 



178 





126 

 119 



Total, South 



1970 

 1962 

 1952 



78,404 

 66, 786 

 55, 115 



8,829 

 7,593 

 6,219 



12, 606 

 11,137 

 9,545 



14, 100 

 12, 496 

 10, 868 



13, 435 

 11,667 

 9, 923 



10, 865 

 8,938 

 7,176 



7,636 

 6,268 

 4,806 



4,799 

 3,901 

 2,927 



2,876 

 2,248 

 1,595 



2,926 

 2,280 

 1,797 



327 





254 

 254 



PNW Douglas-fir 



1970 

 1962 

 1952 



99, 159 

 104, 410 

 109, 904 



2,479 

 2,205 

 2, 011 



3,645 

 3,345 



2,858 



4,655 

 4,264 

 3,718 



5,281 

 5,049 

 4,647 



5,722 

 5,368 

 4,618 



5,917 

 5,674 

 5,416 



5,840 

 5,659 

 5,237 



5,567 

 5,571 

 5,507 



19,716 

 19, 966 

 20, 438 



40, 337 





47, 309 

 55, 454 



PNW ponderosa pine 



1970 

 1962 

 1952 



41, 859 

 41, 301 

 39, 670 



3,049 

 2,777 

 2,253 



3,679 

 3,286 

 2,735 



3,817 

 3,336 



2,648 



3,701 

 3,265 

 2,723 



3,449 

 3,092 

 2,624 



3,229 

 2,989 

 2,674 



3,013 



2,879 

 2,607 



2,661 

 2,577 

 2,460 



8, 392 

 8,876 

 9,069 



6,869 





8,224 

 9,877 



Alaska — Coastal - 



1970 

 1962 

 1952 



34, 468 

 35, 485 

 35, 493 



404 

 674 

 674 



691 

 674 

 674 



1,078 

 674 

 674 



1,436 

 958 

 958 



1,782 

 2,909 

 2,910 



2,026 

 1,987 

 1,987 



2,302 

 1,880 

 1,881 



2,357 

 1,951 

 1,952 



9,325 

 9,545 

 9,547 



13, 064 





14, 229 

 14, 233 



California and Hawaii 



1970 

 1962 

 1952 



51, 156 

 53, 953 



58, 009 



1,088 

 958 

 766 



1,756 

 1,529 

 1,245 



2,170 

 1,920 

 1,603 



2,375 

 2,138 

 1,835 



2, 465 

 2,276 

 2,055 



2,529 

 2,369 

 2,159 



2,535 

 2,415 

 2,268 



2,481 

 2,397 

 2,281 



9,829 

 9,998 

 10, 140 



23,924 





27, 950 

 33, 654 



Total, Pacific Coast 



1970 

 1962 

 1952 



226, 643 

 235, 150 

 243, 077 



7,020 

 6,614 

 5,704 



9,771 

 8,834 

 7,512 



11,720 

 10, 194 

 8,643 



12, 793 

 11,410 

 10, 163 



13,419 

 13, 646 



12, 207 



13, 702 

 13, 019 

 12, 237 



13, 691 

 12, 834 

 11, 993 



13, 066 



12, 497 

 12, 200 



47, 262 

 48, 386 

 49, 195 



84,194 

 97, 712 

 113, 218 





Northern Rocky Mountain 2 



1970 

 1962 

 1952 



63,106 

 65, 091 

 60,111 



7,084 

 7,760 

 6,371 



8,840 

 7,688 

 6,489 



8,509 

 7,863 

 6,789 



7,400 

 7,393 

 6,500 



6,260 

 6,696 

 6,007 



5,185 

 5,828 

 5,313 



4,245 

 4,865 

 4,551 



3,429 

 3,999 

 3,808 



8,308 

 9,437 

 9,497 



3,840 

 3,559 

 4,782 



Southern Rocky Mountain - 



1970 

 1962 

 1952 



24, 605 

 26, 173 

 24, 931 



2,722 

 2,528 

 2,108 



2, 418 

 2,252 

 1,861 



2,484 

 2,399 

 2,036 



2,534 

 2,689 

 2,356 



2,464 

 2,691 

 2,437 



2,441 

 2,641 

 2,463 



2,193 

 2,353 

 2,260 



1,819 

 2,018 

 2,006 



4,300 

 4,924 

 5,226 



1,226 

 1,673 

 2,174 



Total, Rocky Mountain 



1970 

 1962 

 1952 



87,711 

 91,264 

 85,043 



9,806 

 10, 288 

 8,480 



11,259 

 9,940 

 8,351 



10, 994 

 10, 262 

 8,826 



9,934 

 10, 082 

 8,856 



8,725 

 9,387 

 8,445 



7,626 

 8,470 

 7,776 



6,439 

 7,219 

 6,811 



5,249 

 6,018 

 5,814 



12, 608 

 14, 362 

 14, 723 



5,066 

 5,232 

 6,956 



Total, softwoods 



1970 

 1962 

 1952 



431, 873 

 427, 221 

 411, 012 



35, 914 

 33, 554 

 27, 239 



43, 205 

 38, 188 

 32, 068 



43, 455 

 38, 539 

 32, 681 



40, 720 

 37,063 

 32, 296 



35, 995 

 34, 583 

 30, 156 



30, 959 

 29, 503 

 26, 340 



26,144 

 25, 023 

 22, 686 



21, 973 

 21, 467 

 20, 310 



63,786 

 65, 967 

 66, 677 



89, 718 

 103, 330 

 120, 555 



See footnotes at end of table. 



