Winter Shrinkage in Stems of Forest Trees

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Abstract:

Winter stem shrinkage was studied for different age classes of Betula alleghaniensis (Britton), Acer saccharum Marsh, Tsuga canadensis (L.) Carr, and Tilia americana L. growing on several sites in northern Wisconsin. Winter stem contraction often amounted to much more than the stem expansion during the growing season. Average winter contraction of stems varied among species from 32 percent to 565 percent of the summer increase. Suppressed trees usually shrank relatively more than dominant or intermediate trees. Regression analyses indicated that site and growth rates had little effect on winter stem shrinkage. Winter shrinkage appeared to be primarily a function of species and stem size. The order of winter shrinkage among species was as follows: Tilia americana >Betula alleghaniensis>Acer saccharum>Tsuga canadensis, with relatively little difference between Acer and Tsuga.

Document Type: Journal Article

Affiliations: Professor, Department of Forestry, University of Wisconsin, Madison

Publication date: May 1, 1964

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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