Table 5 .- -Photo- stratification methods ranked by ability to segregate areas 



needing management treatment 



Management category 1 

 --high risk sawtimber 



Management category 5 --young stands needing treatment 



Rank 



10 



11 



Rank 



6 



0.65 



8 



0.17 



5 



0.69 



4 



0.66 



9(M) 

 0.24 



1 



0.42 



7 



0.05 



10(M) 

 0.23 



2 



0.41 



10 



3 



0.01 



11 



11(M) 

 0.08 



NOTE: Percentage indicates probable reduction in needed field plots based on cubic - 

 volume variance. Ranks for management purposes are not on a consistent numerical scale, 



12 



Key- -Photo-stratification methods 



1 



Stand size and crown cover 



6 



Cubic volume-- 1 ,000 -cubic- foot 



2 



Stand size 





class 



3 



Crown cover 



7 



Topographic site 



4 



Cubic volume -- 500 -cubic - 



8 



Species group 





foot class 



9 



Stand size and density (map) 



5 



Cubic volume--l ,000-cubic- 



10 



Stand size (map) 





foot class and topographic 



11 



Density (map) 





site 







