Journal
FOREST ECOLOGY AND MANAGEMENT
Volume 260, Issue 12, Pages 2143-2147Publisher
ELSEVIER
DOI: 10.1016/j.foreco.2010.09.006
Keywords
Scots pine; Growth; Competition; Growing space; Biomechanics
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We tested hypotheses on the effect of growing space and biomechanics on tree growth, using data from two field experiments where Scots pine seedlings had been planted in a fixed but systematically irregular pattern. After 16 or 18 years, respectively, stem diameter was measured at 1.3 m (d(1.3)) and 0.3 m above ground (d(0.3)). Total tree height, length and diameter of the crown, and height to crown gravity point were also measured. Analyses were split in two parts: influence of growing space on tree and crown dimensions, and biomechanical influence of the crown on stem diameter. The results showed that crown size was closely related to tree height, and that there was a small but statistically significant effect of growing space on both crown size and shape. The biomechanical model explained about 85% of the variation in stem diameter, but growing space had no influence on this relationship, indicating that the wind load absorbed by a given crown size was not affected by growing space. The results were discussed in relation to future growth modelling and new ways of estimating site productivity. (C) 2010 Elsevier B.V. All rights reserved.
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