12000 r 



10000 



8000 ■ 



™ 6000 - 



4000 



2000 



SITE INDEX 



80 



70 



60 

 50 



40 



Figure 53 — Western larch yield curves for unthinned plantations in Inland Northwest 

 forests (merchantable cubic feet, 4.5-inch top, stems greater than 7 inches d.b.h.). 



47 



