12.000 

 11,000 

 10.000 - 

 9.000 

 8.000 

 7,000 

 6.000 

 5,000 

 4.000 

 3,000 

 2.000 

 1,000 

 

























— - 



100 













TYPE 20 















- 





































VOLUME 

 80 PERCENT 



































100 













OREGON 

















60 - 



90 





















WASHINGTON 









































GO 

































40 

































- 





40 

































20 





































20 











































is 



^ 12.000 

 § I 1.000 

 g 10.000 



1 



9.000 

 8,000 

 7.000 

 6,000 

 5,000 

 4,000 

 3,000 

 2.000 

 1.000 

 



Figure 1 1 . 



u 































1 



VOLUME 



PERCENT 



100 





11- 





TYPE 20 



Vz 



























































































80 



VOLUME 

 PERCENT 









' 

























100 



OREGON 













































60 



90 















w> 



\SH 



ING 



TOI 



v| 













































so 

































40 

































" 





40 

































20 





































20 





































12 16 20 24 28 32 36 40 44 



DIAMETER AT BREAST HEIGHT ( INCHES ) 

 -Cumulative saw-timber volume per acre in the large ponderosa pine types 

 (20 and 20l 2 ), by diameter class. 



OTHER CONIFER SAVVLOG TYPES 

 (6, 7, 8, 9A, 17, 19A, 23, 27^, AND 29) 



This group of types occupies the cooler, more 

 moist sites on the upper or north slopes, such 

 as along the crest of the Cascade Range, the 

 higher elevations in the Blue Mountains, and 

 generally throughout northeastern Washington. 

 Many of them are comparatively inaccessible. 



In a few locations on the east slope of the Cas- 



cade Range, where the summits 

 are low, Douglas-fir forms a type 

 resembling the forests of western 

 Oregon and western Washington. 

 The largest area of these stands 

 is in the upper Yakima River 

 drainage in Washington. Other- 

 wise the Douglas-fir types have 

 little present commercial value. 



Likewise, the upper-slope mix- 

 ture, fir-mountain hemlock, and 

 white fir stands have little 

 present value for commercial 

 timber. 



Conifer Saw-Timber Types 

 Less Than Sawlog Size 



The types in this group, com- 

 prising the two conifer second- 

 growth groups in tables 3 and 

 4 and consisting chiefly of trees 

 below saw-timber size, cover 2.4 

 million acres, one-seventh of the 

 commercial forest area. 



The 1.1 million acres of the 

 ponderosa pine seedling and sap- 

 ling type (22) occurs chiefly on 

 land that has been clear cut or 

 practically so (fig. 13). It is ex- 

 tremely accessible and much of 

 it would have been ready to 

 yield another crop by now if it 

 had been selectively cut over. 

 Two-thirds of the area of this 

 land is privately owned and 

 most of such land in national 

 forests was acquired by the 

 Federal Government from private 

 owners after cutting. Stocking of this type com- 

 bined with type 28 (table 7) averages 34 percent 

 well stocked, 43 percent medium stocked, and 23 

 percent poorly stocked. Ponderosa pine small 

 mixed (28) occupies 0.3 million acres, mostly 

 old burns. 



The small upper-slope mixed type, chiefly on 

 old burns and nearly two-thirds of it in Washing- 

 ton, covers 0.7 million acres, or considerably less 

 than the area occupied by type 22. A large part 



52 56 60 64 68 72 76 82 



99 



