REGULATION IN LODGE POLE 165 



From this statement it is evident that the property has too 

 much bare land and young 1 stuff, is practically without middle aged 

 stock, but has an abundance of ripe timber. If a continuous supply 

 is to exist here Regulation must get along with what timber there 

 is in age class VII and older, until the young stuff is sufficiently 

 large to cut. The probability is that rotation is set higher by about 

 20-40 years than is absolutely necessary, even for average site. 



e. Sites were not differentiated in the examination of the 

 property. 



f. Growing Stock of merchantable material on the 194,000 

 acres of old woods is estimated at 3200 million feet b. m. over 10" 

 d. b. h. or about 16,000 feet b. m. per acre. Good (fully stocked) 

 stands on average site run 25,000 feet b. m. Volume of young stock 

 is neglected in the calculation. 



g. Actual average growth of ripe timber is set at 16000/200 = 

 80 ft. b. m. Normal average growth of ripe timber at 25000/200 = 

 125 ft. b. m. Actual Growing stock per acre is 3200 million (ft.)/ 

 400,000 (acres) =8000 ft. Normal Growing Stock per acre is 

 25000/2= 12500 ft. 



h. Plan of Cutting, i. e., the silvicultural plan is to cut the land 

 over by the selection method, taking about 30-35% of the stand of 

 any one acre, the rule being to "leave a forest cover." Later on, 

 (within 50 years) it is expected that the Clear Cut system with 

 seeding from the side can set in. 



i. Regulation, for the present, must set a reasonable Volume 

 check, i. e., it must determine the amount of timber which may safely 

 be cut without over-cut, and with full regard for the conditions, 

 particularly irregularity of age classes, and assure a sustained yearly 

 cut from the property. Several methods are tried, as follows, and 

 their results compared. 



j. Fixed yearly Cut, modified. To apply this method, the 

 189,000 acres of bare land and young stuff are left out of considera- 

 tion for the present since no cutting can be done on these lands. 

 For the other 194,000 acres the plan provides for a 40 year return, 

 a yearly cut of 194,000/40 or about 5000 acres, and silviculture 

 indicates a cut of 16000/3 or about 5 M. ft. per acre. Total Cut: 

 5 M. X 5000 (acres) or 25 million feet b. m., to be cut wherever 



