Optimum Juvenile Density, Harvesting, and Stand Structure in Even-Aged Scots Pine Stands

Authors: Hyytiäinen, Kari1; Tahvonen, Olli2; Valsta, Lauri3

Source: Forest Science, Volume 51, Number 2, April 2005 , pp. 120-133(14)

Publisher: Society of American Foresters

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Abstract:

The economics of timber production is studied using empirical data for various juvenile densities and a distance-independent individual-tree growth model specified for Finnish Scots pine (Pinus sylvestris [L.]) stands. Our results imply that explicit inclusion of quality effects on prices increases optimum juvenile density. In addition, quality effects make economic surplus of forestry more sensitive to variations in juvenile density. Optimum thinnings remove trees that have no prospects for high relative value growth. Optimum thinnings are selective thinnings that remove inferior-quality trees, some of the smallest trees and, contrary to conventions, those of the largest trees that fulfill the sawlog dimensions. Thinnings removing trees strictly above and/or below certain tree diameters homogenize the remaining growing stock by narrowing the diameter distribution. Homogeneous stand structure is economically favorable at final clearcutting because the stand can be clearcut promptly after the majority of trees have reached sawlog dimensions and have experienced the last high peak in value growth. FOR. SCI. 51(2):120–133.

Keywords: Forest economics; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; individual-tree growth model; natural resource management; natural resources; thinning type; timber quality

Document Type: Regular Article

Affiliations: 1: Finnish Forest Research Institute Unioninkatu 40A Helsinki Finland FIN-00170 Phone: +358 10 2112189;, Fax: +358 10 2112104, Email: kari.hyytiainen@metla.fi 2: Finnish Forest Research Institute Unioninkatu 40A Helsinki Finland FIN-00170 Phone: +358 10 2112210, Email: olli.tahvonen@metla.fi 3: Department of Forest Economics University of Helsinki PO Box 27 Finland FIN-00014 Phone: +358 9 19157971, Email: lauri.valsta@helsinki.fi

Publication date: April 1, 2005

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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