ELEVATION-CULL RELATIONSHIP 



Some loggers in Southeast Alaska assert that the higher their 

 operation above sea level, the more cull they encounter in the timber 

 stands. An effort was made to determine if this was a general 

 condition throughout the area. The study trees were segregated by 

 50-foot elevation intervals and the cull percentages determined for 

 each interval (table 9). The results of this analysis indicate no 

 general correlation between elevation and percent of cull in any of 

 the tree species. 



Table 9. — Percent cull in three tree species, by elevation above 

 sea level. Southeast Alaska . (Percent of gross cubic- 

 foot volume from the ground to a U-inch d.i.b. top in 

 the main bole.) 





Sitka 



spruce 



: Western 



hemlock 

 : Cubic 



: Western 



redcedar 



Elevation 





: Cubic 



: Cubic 



intervals, 



Basis, 



: volume 



: Basis, 



: volume 



: Basis, 



: volume 



feet 



trees 



: cull 



: trees 



: cull 



: trees 



: cull 





Number 



Percent 



Number 



Percent 



Number 



Percent 



1-50 



28 



18 



hi 



13 



18 



78 



51-100 



111 



13 



105 



20 



22 



62 



101-150 



16 



3 



15 



11 



22 



51 



151-200 



17 



13 



16 



12 



9 



68 



201-250 



13 



7 



16 



21 



10 



79 



251-300 



12 



1 



16 



18 



5 



77 



301-350 



13 



15 



Ik 



19 



5 



86 



351-UOO 



8 







1 



19 



_— 



__ 



iiOi-U5o 



5 



5 



1 



ia 



__ 



__ 



Ii5i-5oo 



-- 



— 



2 







__ 



__ 



501-550 



— 



— 



1 







1 



88 



551-600 



— 



— _ 



1 







1 



52 



601-650 



— 



— 



__ 



__ 



__ 





651-700 



— 



__ 



__ 



__ 



1 



28 



701-750 



—. 



— 



__ 



__ 



__ 



__ 



751-800 



— 



__ 



__ 



__ 



2 



79 



801-850 



— — 



__ 



._ 



__ 



__ 





851-900 



3 



6 



__ 



__ 



__ 



__ 



901-950 



— 



— 



1 







__ 



__ 



951-1000 



5 







i_— 



__ 



2 



83 



1001-1050 



1 



5 



— 



— — 



— 





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