336 



Forestry Quarterly. 



a very distinct relation between the diameter of the tree and 

 the size of the crown. The crowns of only normal, dominant 

 trees were chosen for this table. 



It was observed that the crowns of Yellow pines whose D. B. H. 



TABLE II. 



Showing the relation between the diameter b. h. and the diameter and 

 area of the crowns of dominant, normal, Western Yellow pine in Oregon. 



Average 



D. B. H. 



Inches 



12 



14 

 16 

 18 

 20 

 22 

 24 

 26 

 28 

 30 

 32 



34 

 36 

 38 

 40 

 42 



Showing, for various diameter classes, the distance at which Western 

 Yellow pine must be spaced in pure stands in order that all trees will be 

 dominant. 



Actual 

 Diameter 



of 



Crowns 



from 



Table II. 



FfiET. 



D. B. H. 



INCHES. 



12 

 16 

 20 



24 

 28 

 32 

 36 

 49 



II 

 16 



19 

 21 

 23 

 25 

 27 

 30 



Distance apart 

 Trees should 

 stand, allowing 

 for space beyond 

 Periphery of Crowns. 

 FEET. 

 16 

 22 

 27 

 31 

 35 

 40 

 44 

 50 



