CHAPTER II 



REGULATION OF CUT * 



DEFINITION 



Regulation of the cut is the fixation, in advance, of the 

 annual or periodic cut, which, in the normal forest, would be 

 equivalent to the annual or periodic increment. The regulation 

 of cut is necessarily preceded by a determination of the amount 

 to be cut and by the location of the areas to be cut over. 



The space of years for which the cut is regulated depends 

 on the frequency of accurate revisions of the working plan. 

 Ten years is the customary minimum period for which the cut 

 is regulated ; at the end of that time j the working plan is 

 revised and the cut regulated for the following decade. Where 

 period methods (see below) are used, the cut is regulated in 

 detail for the first period— twenty years in advance J — or even 

 for the first two periods^forty years in advance § — in detail 

 for the first period of twenty years and roughly for the second 

 period. Despite this regulation, so far in advance, exhaustive 

 revisions are undertaken at the end of each decade. Frequent 

 revisions are an absolute essential, and the regulation of cut 

 for many years in advance, or even for the whole rotation, is 

 little better than a useless play. 



* Yield in the sense of tlie allowable cut from a forest has been abandoned, 

 in the terminology of the Society of American Foresters, in order to prevent 

 ambiguity. The terminology defines yield as " the timber or wood volume 

 that is (actually) or can be (normally) produced by a stand of a given composi- 

 tion at a given age under given site, conditions and treatment — the actual, or 

 normal product of the stand." 



t In Saxony the revision is undertaken every five years; the plan is for ten 

 years. 



t Prussia. § Austria. 



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