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Forests 2017, 8(10), 370; doi:10.3390/f8100370

Assessing Alternative Silvicultural Prescriptions for Mid-Rotation, Unthinned, Spruce-Fir Stands in Maine

Department of Forestry and Environmental Conservation, Clemson University, 261 Lehotsky Hall, Clemson, SC 29634, USA
Paul Smith’s College, Department of Forestry, 7833 New York 30, Paul Smiths, NY 12970, USA
School of Forest Resources, University of Maine, 5755 Nutting Hall, Orono, ME 04469, USA
Author to whom correspondence should be addressed.
Received: 20 August 2017 / Revised: 22 September 2017 / Accepted: 26 September 2017 / Published: 28 September 2017
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Determining the optimal timing and type of entry in mid-rotation, unthinned stands can be complicated by a variety of economic and biological factors. In this analysis, long-term data from the Commercial Thinning Research Network was used to project spruce-fir (Picea spp.—Abies balsamea (L.) Mill.) stand growth on six different sites across Maine following six alternative thinning treatments (33% and 50% relative density removal paired with low, crown, and dominant thinning methods). Results showed that the low-thinning treatment performed best in terms of maximum net present value, stand age at time of maximum net present value, and average merchantable stem size. Although the low-thinning resulted in a 10% mean reduction in maximum net present value when compared to the control, the average merchantable stem size more than doubled. Overall, results of this analysis indicate that it may be financially responsible to commercially thin these stands using a low-thinning method and a light removal intensity, as the average merchantable stems size was increased and a mid-rotation financial return provided. View Full-Text
Keywords: net present value; harvesting; silviculture; New England; Acadian forest net present value; harvesting; silviculture; New England; Acadian forest

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Hiesl, P.; Crandall, M.S.; Weiskittel, A.R.; Kizha, A.R. Assessing Alternative Silvicultural Prescriptions for Mid-Rotation, Unthinned, Spruce-Fir Stands in Maine. Forests 2017, 8, 370.

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