DOUGLAS-FIR HEIGHT PREDICTION 



(Equation II) 



Table 5a. — Base values from stand age and white pine site index 



Stand 







White pine site index 







age — 



(years) 



40 



50 



60 



70 



80 



30 



19 



24 



27 



28 



29 



40 



29 



37 



42 



46 



49 



50 



37 



47 



54 



60 



65 



60 



44 



55 



64 



72 



79 



70 



51 



63 



74 



83 



92 



80 



57 



71 



83 



94 



104 



90 



62 



78 



92 



104 



115 



100 



68 



85 



100 



113 



126 



Table 5b. — Adjustment values for topo 

 position 



Position 



Adjustment value 



Ridge 



+4 



Upper slope 



-1 



Middle slope 







Lower slope 



+ 1 



Flat or bench 



-4 



Table 5c— Adjustment values for habitat type 



Habitat type 



Adjustment value 



Abies / Pachistima 







Thuja/ Pachistima 



-1 



Thuja- Tsuga/ Pachistima 







18 



