24000 



20000 



16000 



m 12000 



8000 



4000 



++..+ 



+ ++ + 



+ 



-Hl -tf . + ++ +1 



10 20 30 40 50 60 



SITE INDEX 



70 



90 



Figure 33 — Grand fir yield vs. site index at 1 10 years (total cubic feet). 



SITE INDEX 



80 

 70 

 60 



50 



40 



30 



Figure 34 — Quadratic mean diameter vs. age for grand fir untfiinned plantations 

 in Inland Northwest forests. 



32 



