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Article: Seasonal dynamics of the radial increment of Scots pine and Norway spruce in the southern and middle boreal zones in Finland.(Report)
- Article from:
- Canadian Journal of Forest Research
- Article date:
- March 1, 2009
- Author:
CopyrightCOPYRIGHT 2009 NRC Research Press. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Introduction
In boreal and temperate vegetation zones, the radial increment of trees is a dynamic process, and the rate of accumulation of new woody material varies considerably during the year. Cumulative wood formation typically follows a S-shaped curve, with slow increment during spring and early summer, fast increment in midsummer, and a gradually decreasing rate towards autumn (e.g., Popescu et al. 1968; Schmitt et al. 2004).
Our knowledge concerning the timing of the various phases and the rate of wood formation is still far from complete (e.g., Savidge et al. 2000; Chaffey 2002). For many regions we still do not know the period when wood cells ...