1 SELECTION SYSTEM: REPRODUCTION METHODS SELECTION SYSTEM: REPRODUCTION METHODS Ralph D. Nyland Department of Forest and Natural Resources Management SUNY College of Environmental Science and Forestry Syracuse, NY 13210 Nyland - 2010 All rights reserved Use of all or parts of this permission prohibited without express consent of Ralph D. Nyland Background reading: Chapter 11, in Nyland, R.D. 2002. Silviculture: Concepts and Applications. Waveland Press. Long Grove, IL. 2ed. Sources cited: Hansen, G.D., and R.D. Nyland. n.d. Target Residual Basal Area by Size Class for Selection System in Northern Hardwoods Using Different Cutting Cycle Lengths. Unpubl. manuscr. SUNY Coll. Environ. Sci. and For. Syracuse, NY Leak, W.B., and S.M. Filip. 1977. Thirty-eight years of group selection in New England northern hardwoods. J. For. 75:641-643. Nyland, R.D. 1986. Important trends and regional differences in silvicultural practice for northern hardwoods. In The Northern Hardwood Resource: Management and Potential. Proc. Conf., Aug. 18-20, 1986. Mich. Technol. Univ., Houghton, MI. Nyland, R.D. 1987. Selection system and its application to uneven-aged northern hardwoods. Pp. 49-80, in Managing Northern Hardwoods. R.D. Nyland (Ed.). SUNY Coll. Environ. Sci. and For., Fac. For. Misc. Publ. NO. 13 (ESF 87-002), Soc. For. Publ. No. 87-03
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Ralph D. NylandDepartment of Forest and Natural Resources Management
SUNY College of Environmental Scienceand Forestry
Syracuse, NY 13210
Nyland - 2010
All rights reservedUse of all or parts of this permission prohibited
without express consent of Ralph D. Nyland
Background reading:
Chapter 11, in Nyland, R.D. 2002. Silviculture: Concepts and Applications.Waveland Press. Long Grove, IL. 2ed.
Sources cited:
Hansen, G.D., and R.D. Nyland. n.d. Target Residual Basal Area by Size Class for Selection System in Northern Hardwoods Using Different Cutting Cycle Lengths. Unpubl. manuscr. SUNY Coll. Environ. Sci. and For. Syracuse, NY
Leak, W.B., and S.M. Filip. 1977. Thirty-eight years of group selection in New England northern hardwoods. J. For. 75:641-643.
Nyland, R.D. 1986. Important trends and regional differences in silvicultural practice for northernhardwoods. In The Northern Hardwood Resource: Management and Potential. Proc. Conf., Aug. 18-20, 1986. Mich. Technol. Univ., Houghton, MI.
Nyland, R.D. 1987. Selection system and its application to uneven-aged northern hardwoods. Pp. 49-80,in Managing Northern Hardwoods. R.D. Nyland (Ed.). SUNY Coll. Environ. Sci. and For.,Fac. For. Misc. Publ. NO. 13 (ESF 87-002), Soc. For. Publ. No. 87-03
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Recall that uneven-aged silviculture requires three prescriptions:
1- Residual density and cutting cycle length
2- Residual diameter distribution and maximum DBH
3- An appropriate reproduction method
… to uniformly intersperse the age classes
… to arrange them by family groups
For now focus on an appropriate reproduction methodappropriate reproduction method …
… to uniformly intersperse the age classes
oror
… to arrange them by family groups
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... part of a silvicultural system for uneven-aged communities
(GREEN shows the reproduction method)Selection system silviculture