PRODUCTIVITY OF RECENTLY CUT LANDS 



269 



recognized. Six of these deficient type 

 groups are softwood or mixed softwood and 

 hardwood groups, and of these 4 are native 

 to the East. The area of commercial forest 

 land occupied by the 8 deficient groups is 

 56 percent of all such land in the United 

 States and Coastal Alaska. For 9 type 

 groups, the percentage of recently cut land 

 in the upper productivity class exceeds the 

 national average. These include 6 of the 8 

 western softwood type groups, 2 eastern hard- 

 wood type groups, and western hardwoods. 

 Together these 9 groups occupy 34 percent of 



all commercial forest land. Two eastern 

 softwood type groups have productivity ap- 

 proximating the national average, and they 

 occupy 10 percent of all commercial forest 

 land. 

 12. The adverse conditions and deficient type 

 groups outlined in items 10 and 11 are those 

 tending to hold down the level of growth on 

 recently cut lands. They identify the major 

 opportunities which exist for increasing 

 growth and point out where efforts may best 

 be concentrated. 



