Forest protection in Canada, 1912-1914, by Clyde Leavitt . ern pulpwood operation, than it will in the case of an old-timelumbering operation, where the percentage of unlopped material mayclosely correspond to these figures. Any increase in the percentageof brush lopped, whether by closer utilization or through observance oflaw, will inevitably increase the average rapidity of decay and willthus decrease the fire danger to that extent. Since the fire danger due to slash is in direct proportion to theamount of brush, the above conclusions may be stated in another an ordinary lumbering op
Forest protection in Canada, 1912-1914, by Clyde Leavitt . ern pulpwood operation, than it will in the case of an old-timelumbering operation, where the percentage of unlopped material mayclosely correspond to these figures. Any increase in the percentageof brush lopped, whether by closer utilization or through observance oflaw, will inevitably increase the average rapidity of decay and willthus decrease the fire danger to that extent. Since the fire danger due to slash is in direct proportion to theamount of brush, the above conclusions may be stated in another an ordinary lumbering operation, the lopping of tops will reduce theperiod of decay from 25 years to 8 years on 75 per cent to 85 per cent ofthe debris, while the period of most extreme fire danger will be decreasedfrom 10 years to 3 years ; this statement assumes that the lowerbranches, comprising 15 to 25 per cent, of the debris, would be loppedin any event as a part of the operation. In a pulpwood operation,lopping will reduce the period of decay from 15 years to 7 years, on. RECENT CUTTING ON SANTA CLARA LUMBER TRACT, ADIRONDACK PRESERVE Lopped pile in the foreground. Skidways of pulp wood in the background. Note also how the foresthas been opened up. Hardwood, hemlock, cedar and small spruce remain. TOP-LOPPING IN THE ADIRONDACKS 73 10 per cent to 25 per cent of the debris, and the period of most extremefire danger will be decreased from 7 to 3 years. As before, these figuresmust be regarded as merely broad generalizations, subject to greatvariation on account of difference in local conditions, and to revisionfollowing more exhaustive investigations. The prevention of fire is much more important after the younggrowth is established, and has secured a good start, than it is duringthe first three or four years after the completion of the operation, since,in the former case, the owner has at stake a far greater investment,which should be regarded as accumulated interest upon the capitalizedprod
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
