THE FOREST RESOURCES OF THE WORLD. 89 



States should introduce rational forest management. At present, 

 forest management would consist in large part of conservative treat- 

 ment of existing forests with a relatively small amount of planting. 

 If postponed until a timber shortage forces the United States to 

 action, it would face the problem of the slow conversion of scrubby 

 woodland into productive forest and the costly planting of denuded 

 wastes on a very large scale. While the present area of wooded land 

 in the United States is usually estimated as 545,000,000 acres, some 

 of this is of no commercial value, and much is inevitably destined, 

 with the increase in the population of the country, to be cleared for 

 agriculture. The area of land so situated as to be permanent forest 

 land is about 450,000,000 acres, of which 100,000,000 will con- 

 sist of farm woodlots. The inevitable increase in wood consumption, 

 following increase in population and growth of industries, will thus 

 have to be supplied .from a diminished forest area. Therefore, the 

 only solution of the problem of a wood supply is to begin now to 

 prepare for making a diminished forest area supply an increased 

 population. This means that the land should be surveyed and 

 classified by the Government, and forest management applied to the 

 permanent forest land now — before it is too late. 



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