A NATIONAL PLAN FOR AMERICAN FORESTRY 89 



MANAGEMENT FOR SUSTAINED YIELD IS PART OF FORESTRY 



" Keeping the forest green" will not keep alive the communities 

 that are dependent on forest exploitation unless the timber is cut on 

 a sustained yield basis. The process of logging more rapidly than 

 the forest can be regrown inevitably results in a period of waiting 

 until a second crop is ready for cutting. If the lands are promptly 

 restocked with young trees this period will be shorter than if they 

 are not, but in either case industry will stop too long for the inter- 

 locked and interdependent businesses and social institutions, which 

 were built on the basis of a boom in forest exploitation, to continue. 

 The orderly utilization of forests, in accordance with the principle of 

 sustained yield, is one of the major purposes of American forestry. 



MAINTENANCE OF MARKETS IS ESSENTIAL FOR FORESTRY 



Stability of forest land use and of forest industries and communities 

 requires that there be markets for forest products. From the stand- 

 point of the private owner, forestry will be impossible unless the 

 products can be sold at a profit. From the standpoint of the public 

 as a forest owner, it is also desirable that forestry be self-supporting 

 so far as may be practicable and consistent with the other objectives 

 of management. From the standpoint of society, regardless of who 

 owns the forests, the existence of permanent industries using timber 

 and other products of forests, giving employment to large numbers of 

 individuals, and contributing toward the support of Government and 

 of local institutions, is greatly to be desired. Development through 

 research of ways to use forest products so that they will satisfy the 

 largest possible number of wants and the promotion of their wide- 

 spread use, must occupy an important place in a program of American 

 forestry. 



FORESTRY INVOLVES MULTIPLE-PURPOSE MANAGEMENT 

 THE MULTIPLE VALUES OF FORESTS 



Most forest lands possess inherently more than a single value. 

 They produce wood and numerous byproducts (resin, tanbark, 

 mast) for domestic and industrial use. In many instances, they also 

 produce forage for domestic livestock. They furnish food and shelter 

 for game animals, fur bearers, and other wild life. They protect the 

 soil against erosion. They moderate extremes of run-off and afford 

 protection against drying or otherwise harmful winds. They beautify 

 the landscape and offer opportunities for healthful and inexpensive 

 recreation to millions of our people. The best forestry takes account 

 of all these values. 



MULTIPLE-PURPOSE MANAGEMENT OF PUBLIC FORESTS 



Multiple-purpose management for the production, conservation, 

 and utilization of timber, forage, water, wild life, and recreational 

 values was first developed and is now found generally on the national 

 forests. 



Its object is the greatest total output of products, uses, and services. 

 The multiple-purpose formula is exceedingly flexible, permitting 

 changes in emphasis and type of use as conditions change and as 



