THE CHANGING FOREST INVENTORY 



21 



-A 



F-459098A 



Figure 21. — The marked preference /or pine in upland logging has been a prime cause oj the large increase in hardwoods over pine. 



70 60 50 40 30 20 

 PERCENT DECREASE 



10 20 30 40 



PERCENT INCREASE 



Figure 22. — Percentage change in number of softwood grow- 

 ino-stock trees between 1932—35 and 1946—48. 



40 30 20 10 

 PERCENT DECREASE 



20 30 40 50 60 70 

 PERCENT INCREASE 



Figure 23. — Percentage change in number of hardwood grow- 

 ing-stock trees between 1932-35 and 1946-48. 



055528° — 51- 



