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Conference papers

Annual growth distribution along stems of Douglas fir

Abstract : Radial growth of trees is most of the time observed and measured at breast height (1.30 m),mainly for practical reasons and because it is now accepted as a standard height of measurement around the world. In this work, we address the question of the representativeness of breast height growth measurements with in mind the potential consequences for biomass estimations. Bouriaud et al. (2005) have shown that under particular environmental conditions implying stress, what was observed at 1.30 m was not representative of what happened at other height levels along the bole. More generally, the Pressler’s law which assumes that ring area is constant along the stem between the butt swelling and the crown base was invalidated by several authors (e.g., Courbet et al., 1999). This raises also the question of growth partitioning rules within trees under certain conditions (McCarthy and Enquist, 2007; Latte et al., 2015). In this work, radial growth of Douglas fir trees was analysed at several height levels. A model of relative growth distribution along the bole was developed with the aim to provide the better predictions as possible. Ontogeny and height over diameter ratio were the main factors considered in this model. The model was implemented into a growth simulator. Then, the residuals were analysed as a function of time in order to better understand the impact on the partitioning of tree growth of some extreme and punctual events such that thinnings and droughts.
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Contributor : Migration Prodinra <>
Submitted on : Wednesday, June 3, 2020 - 4:59:33 AM
Last modification on : Tuesday, June 15, 2021 - 2:57:05 PM


  • HAL Id : hal-02742880, version 1
  • PRODINRA : 406227



Frédéric Mothe, Fleur Longuetaud, Ingrid Seynave, Daniel Rittie, Christine Deleuze. Annual growth distribution along stems of Douglas fir. Wood QC 2016. Modelling wood quality, supply and value chain networks, Université Laval. CAN., Jun 2016, Québec, Canada. ⟨hal-02742880⟩



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