Table 4— Yields of Douglas-fir plantations fiaving 500 trees per acre surviving 5 years, tfiinning from below to 250 trees per acre at 20 years, 

 and tfiinning from below to 100 trees per aae at 50 years 



Summary statistics 



Volume per acre Removals per acre 



Site 

 index Age 



Trees/ 

 acre 



Total 

 volume 



Merchant- 

 able 

 volume 



Merchant- 

 able 

 volume 



Trees/ 

 acre 



Total 

 volume 



Merchant- 

 able 

 volume 



Merchant- 

 able 

 volume 



BAJ 

 acre 



Cur 



Top 

 neigni 



Don 



Growth 



MOR/ 

 year 









Ft' 

 r 1 



Ft' 



Rrl ft 





Ft' 

 r 1 



Ft' 



Rrl ft 



DU II 







Pi 



Yr 



Ft' 



Ft' 





50 5 



500 



































2 



3 



5 



2 







0.0 



10 



473 



10 



























1 



5 



8 



10 



4 







0.7 



20 



432 



47 











182 



8 











4 



1 1 



16 



10 



12 







1.8 



30 



232 



155 



























14 



26 



25 



10 



24 







3.3 



40 



225 



396 



37 



108 



















29 



45 



34 



10 



36 



1 



4.9 



50 



217 



741 



260 



829 



117 



263 



1 



2 



28 



37 



43 



10 



26 



1 



7.2 



60 



98 



730 



598 



2033 



















38 



47 



50 



10 



30 



2 



8.4 



70 



95 



1012 



915 



3335 



















47 



56 



57 



10 



32 



3 



9.5 



80 



92 



1302 



1213 



4653 



















56 



64 



63 



10 



35 



4 



10.5 



90 



89 



1 607 



1517 



6128 



Q 















64 



71 



68 



10 



36 



g 



1 1 .5 



100 



86 



1914 



1822 



7726 



















72 



77 



73 



10 



36 



7 



12.4 



110 



82 



2200 



21 06 



9296 



Q 















79 



82 



77 



10 



36 



g 



13.3 



120 



79 



2469 



2373 



10846 



















85 



85 



81 



10 



37 



1 1 



14.1 



iin 

 1 ou 



1 \j 



2732 



2633 



1 2434 















Q 



Q1 



QQ 



oo 



OH 





17 



1 9 







T> 



1 £. 



2983 



2882 



1 401 



















96 



00 

 j\j 



QQ 

 OO 



in 



37 



13 



15 7 



1 



DO 





3119 









\J 







1 U 1 





Q1 



A 

 U 







n 

 u 



1 R c; 



70 5 



500 



































2 



3 



5 



5 







0.0 



10 



478 



27 



























4 



10 



12 



10 



20 







1.2 



20 



447 



226 



3 



9 



197 



40 











15 



28 



27 



10 



55 







3.4 



30 



242 



732 



224 



721 



















47 



66 



40 



10 



87 



2 



5.9 



40 



236 



1589 



1163 



4042 



















83 



105 



52 



10 



103 



6 



8.0 



50 



226 



2601 



2332 



8828 



126 



993 



817 



2792 



71 



79 



62 



10 



77 



5 



11.4 



60 



97 



2326 



2219 



9623 



















92 



96 



70 



10 



82 



10 



13.2 



70 



92 



3053 



2935 



13659 



















111 



108 



78 



10 



84 



14 



14.8 



80 



88 



3756 



3628 



17845 



















128 



117 



84 



10 



90 



20 



16.3 



90 



83 



4453 



4316 



22134 



















142 



125 



90 



10 



90 



25 



17.7 



100 



78 



5105 



4961 



26157 



















155 



131 



96 



10 



87 



30 



19.1 



110 



73 



5677 



5528 



29731 



















165 



135 



101 



10 



88 



35 



20.3 



120 



66 



6209 



6055 



32999 

















173 



138 



105 



10 



83 



36 



21 .5 



130 



64 



6680 



6523 





















180 



140 



109 



10 



78 



41 



22.6 



1 40 



60 



7052 



6893 



381 60 







Q 











184 



1 41 



113 



1 



80 



45 



23 7 



150 



56 



7396 



7237 



40252 



















187 



1 41 



116 















24.7 



90 5 



500 



































2 



4 



5 



16 







0.0 



10 



489 



79 



























9 



21 



18 



10 



72 







1.8 



20 



472 



801 



253 



771 



222 



135 











42 



61 



40 



10 



137 



1 



5.6 



30 



245 



2026 



1670 



5960 



















99 



122 



57 



10 



171 



9 



8.6 



40 



234 



3649 



3400 



13473 



















152 



172 



71 



10 



183 



25 



10.9 



50 



218 



5229 



4991 



21796 



118 



1855 



1745 



6717 



120 



117 



82 



10 



132 



15 



14.8 



60 



96 



4549 



4403 



22039 



















148 



134 



90 



10 



143 



25 



16.8 



70 



90 



5734 



5571 



29357 



















174 



148 



97 



10 



143 



34 



18.8 



80 



85 



6828 



6653 



35963 



















195 



159 



104 



10 



125 



40 



20.6 



90 



79 



7684 



7500 



41164 



















210 



166 



109 



10 



139 



55 



22.0 



100 



74 



8532 



8340 



46226 



















223 



171 



114 



10 



118 



52 



23.6 



110 



69 



9192 



8995 



50138 



















233 



174 



118 



10 



119 



61 



24.9 



120 



64 



9770 



9569 



53534 



















240 



176 



121 



10 



113 



64 



26.2 



130 



60 



10269 



10066 



56440 



















244 



177 



125 



10 



121 



71 



27.3 



140 



56 



10763 



10559 



59378 



















249 



177 



128 



10 



104 



65 



28.7 



150 



52 



11153 



10948 



61649 



















252 



176 



131 















29.8 



11 



