Final office work 



Irriportant steps in the operation 



Key points 



1. Add up volume of check- 

 scaled trees by species. 





2, -Add up tree measured volume 



of the same trees. 



Volume taken from appropriate 

 field sheets. 



3. Divide item 1 by item 2 



above. This quotient is the 

 correction factor. 



Refer to page 25 of this publication. 

 Each species will have a separate 

 correction factor. It might also be 

 found that each size stratum should have 

 a separate correction factor. This can 

 be determined by plotting check-scaled 

 volumes for all strata over estimated 

 volumes of the same trees. If the 

 trend appears to be a straight line, 

 vjhich passes through the zero origin, 

 then a common correction factor for 

 all size strata can be used. If it is 

 noticeably above or below the zero 

 origin or noticeably curved, then 

 separate factors should be calculated 

 and used. 



4o Multiply total tree measured 

 volume by the appropriate 

 correction factor to obtain 

 final pstimatpd npt vol iinp 



Use a form similar to the one on the 

 following page. 



5. iidd net volume of each size 

 stratum (if they were 

 corrected separately) to 

 obtain total estimated net 

 volume for each species. 





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