40 T 



40 50 60 70 80 



SITE INDEX MIDPOINT 



Figure 51 — Distribution of western larch plantation site index values for 

 Inland Northwest forests. 



12000 



10000 



8000 



™ 6000 



4000 



2000 



SITE INDEX 



80 



70 



60 

 50 



40 



Figure 52 — Western larch yield curves for unthinned plantations in Inland Northwest 

 forests (total cubic feet all stems). 



46 



