9. Clear cuts and other cutting units should be laid out 

 to provide for adequate air drainage through a cutting 

 unit, if it is not the lowest depression. This will minimize 

 cutting-related frost pockets. Smaller cutting units (group 

 selections) will reduce radiational cooling and frost prob- 

 lems on sites that may have potential problems. To be ef- 

 fective, widths of strips or patches should be less than two 

 tree (border tree) heights wide. 



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18 



