PROJECTED TIMBER SUPPLIES 1970 LEVEL OF MANAGEMENT 



79 



commercial timberland during this same period, 

 largely as a result of acquisition from other private 

 ownerships. Farm and miscellaneous private 

 ownership of commercial timberland has generally 

 decreased, largely because of shifts to industrial 

 ownership and conversion of substantial areas to 

 nonforest uses such as urban development and 

 pasture. 



The projected changes in commercial timber- 

 land during the period 1970-2020 assume some 

 continued losses of forest land to various non- 

 timber uses such as indicated above. Thus, in 

 coastal Alaska 326 thousand acres of commercial 

 timber land was assumed to be withdrawn in the 



the 1970's for recreational use. It is of course 

 possible that growing needs for recreational and 

 environmental uses of forest land will lead to 

 further withdrawals of land from timber harvest- 

 ing. Hence these projections of commercial 

 timberland, and related projections of future 

 timber supplies, must be considered as approxima- 

 tions that appear reasonable at this time. 



Timber Removals 



A summary of trends in removals, and their 

 relationship to other variables such as net growth, 

 roundwood products, and inventories, is presented 

 in tables 68 and 69. Removals of growing stock 



Table 68. — Timber removals, net growth, mortality, supplies of roundwood products, and inventories in the 

 Pacific Coast Section, 1952, 1962, and 1970, with projections (1970 level of management) l to 2020 



[Million cubic feet] 



Item 



1952 



1962 



1970 



Projections 





1980 



1990 



2000 



2020 



SOFTWOODS 



Removals from growing stock: 

 Roundwood products _ ... 



2,821 



568 



98 



2,926 



511 



95 



3,469 



496 



99 



3,337 

 461 

 106 



3,099 

 417 

 108 



3,058 

 404 

 111 



3, 200 



Logging residues .. . 



409 



Other removals 



116 







Total 



3,487 



3,532 



4, 064 



3,904 



3, 624 



3,573 



3, 725 







Net growth . .. 



1,999 

 1,493 



2,328 

 1,434 



2, 589 

 1,378 



2,798 

 1,313 



3,016 

 1,300 



3,211 

 1, 314 



3,480 



Mortality. . . . .. 



1, 375 







Roundwood supplies: 



From growing stock . 



2,821 

 418 



2,926 

 398 



3, 469 

 336 



3,337 

 305 



3,099 

 277 



3,058 

 274 



3, 200 



From other sources 2 . . . 



291 







Total . 



3,239 



3,324 



3,805 



3, 642 



3,376 



3,332 



3,491 







Inventory of growing stock. . . . ... 



243, 077 



235, 150 



226, 643 



210, 861 



204, 072 



200, 374 



195, 773 







HARDWOODS 



Removals from growing stock: 



Roundwood products .. . 



29 



12 



3 



53 



20 



5 



75 



30 



9 



74 

 27 

 28 



87 

 31 

 23 



95 

 32 

 20 



103 



Logging residues . .. 



36 



Other removals . . 



4 







Total 



44 



78 



114 



129 



141 



147 



143 







Net growth . ....... 



297 

 62 



383 

 76 



467 



87 



384 

 125 



294 

 146 



229 

 160 



172 



Mortality. .. ..... 



175 







Roundwood supplies: 



From growing stock ... . . 



29 

 6 



53 

 9 



75 

 10 



74 

 8 



87 

 9 



95 

 10 



103 



From other sources 2 .. .. . 



11 







Total ... 



35 



62 



85 



82 



96 



105 



114 







Inventory of growing stock. . 



10, 427 



12, 749 



14, 822 



17, 584 



19, 526 



20, 624 



21, 530 







1 Plus other area and harvesting assumptions specified 

 in this chapter. 



2 Includes roundwood products from rough and rotten 

 trees, dead trees, and trees on noncommercial and non- 



forest land. 



Note: Estimates are for trend levels and consequently 

 may differ from actual figures for the specified years. 



