Definition of photo interpretation strata used in 1970 inventory on 

 the Coeur d'Alene and the Lewis & Clark National Forests'^ 



Stand Height Greater Than 40 Feet 



Code Crown Cover Description Crown Cover Texture 



21 Medium and well stocked Coarse^ 



22 Medium and well stocked Fine 



23 Poorly stocked Coarse 



24 Poorly stocked Fine 



25 Two storied- -overstory with manageable understory 

 Overstory generally poor but no more than medium stocked 

 Understory poorly (or more) stocked: at least 100 trees 

 per acre would be left after removing overstory 



Stand Height Less Than 40 Feet 



26 Medium and well stocked Fine texture 



27 Poorly stocked Fine texture 



28 Apparently nonstocked 



Other 



40 Noncommercial forest 



60 Nonforest 



92 Water (noncensus) 



^This scheme for stand classification on aerial photos was devised by C. W. Brown, 

 Northern Region, USDA Forest Service. 



^Texture is a visual interpretation of the impression given by variability of 

 crown size. 



In addition to the timbered characteristics of each photo point, the following 

 attributes are recorded: 



a. Multiple Use Zone and Key Value 



b. Special Study Area Classification 



c. Soil Stability Class 



d. Geographic Identity (subcompartment) 



e. Ecological Habitat Type 



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