not been made as to management pur- 

 pose and on which roadbuilding, log- 

 ging, and other activities associated with 

 timber use would reduce the options for 

 later choice. Included in this category 

 would be areas under consideration for 

 wilderness and any other uses with which 

 timber cutting and timber growing 

 would be in conflict. 

 3. Timber growing base 



Productive areas that are suitable for 

 timber use that have not been tempo- 

 rarily or permanently withdrawn from 

 such use. In addition to describing such 

 areas as to forest type, timber size, and 

 productivity, three other broad subdivi- 

 sions are needed. These foUow: 



(a) Yields unaffected by other values 



Areas suitable and available for 

 timber growing that presently can be 

 used for this purpose without a signif- 

 icant reduction of timber yields. 



(b) Yields reduced by other values 



Areas presently suitable and availa- 

 ble for timber production on which 

 protecting or enhancing of other 

 values such as recreation, esthetics, 

 and watershed protection will result 

 in reduced timber yields. 



(c) Marginal utility at present 



To avoid the possibility of over- 

 cutting, certain areas of the timber 

 growing base are not included in the 

 calculation of current cutting budgets 

 because the current utility of these 



areas is shadowed by limitations or 

 restrictions. These "marginal" areas 

 include the following: 



• Areas where there is low probabil- 

 ity of the timber being utilized in 

 the immediate future because of 

 excessive development costs or 

 low timber-product values. 



• Unstable land areas that cannot be 

 logged using present methods 

 without damaging the environ- 

 ment but which may be utilized 

 for timber once a logging system is 

 developed that will not damage the 

 snvironment. 



• Merchantable stands on sites 

 where reforestation following log- 

 ging would be extremely difficult 

 or expensive because of adverse 

 site and/or habitat conditions. 



• Extensive unstocked areas for 

 which money for planting or seed- 

 ing is not likely to be available in 

 the near future. 



• Extensive areas of stagnated tim- 

 ber below utilizable size and areas 

 that will become stagnated or 

 deteriorated to the point of not 

 producing utilizable wood unless 

 and until necessary cultural work 

 is done but for which the financing 

 is not likely to be available in the 

 immediate future. 



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