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Title: Distribution-of-cut guides for thinning in Allegheny hardwoods: a review
Author: Nowak, Christopher A.; Marquis, David A.
Source: Res. Notes NE-362. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7 p.
Description: Distribution-of-cut guidelines describe the amount of stand density to be removed from broad size classes of trees to attain a target residual stand density and stand structure. Current guides for thinning Allegheny hardwoods recommend that 75 percent of the cut relative stand density be taken from below the average stand diameter and 25 percent from above. These guides are well suited for maximizing production of wood volume and stand worth in 50-year-old stands. In 70-year-old stands, previously thinned or not, wood production is maximized by distributing the cut so that the entire cut is from below the average stand diameter. Stand worth is maximized at 25 to 50 percent cut from below. Current guides for thinning 70-year-old Allegheny hardwoods are a compromise between the two at 75 percent cut from below. Only at this percentage is black cherry retained at sufficient levels to fully regenerate a site.
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Nowak, Christopher A.; Marquis, David A. 1997. Distribution-of-cut guides for thinning in Allegheny hardwoods: a review. Res. Notes NE-362. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7 p.
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