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Quantifying the effect of nitrogen-induced physiological and structural changes on poplar growth using a carbon-balance model

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Issue date
2011-04-14
Author
Coll Mir, Lluís
Schneider, Robert
Berninger, Frank
Domenicano, Susy
Messier, Christian
Suggested citation
Coll Mir, Lluís; Schneider, Robert; Berninger, Frank; Domenicano, Susy; Messier, Christian; . (2011) . Quantifying the effect of nitrogen-induced physiological and structural changes on poplar growth using a carbon-balance model. Tree Physiology, 2011, vol. 31, núm. 4, p. 381-390. https://doi.org/10.1093/treephys/tpr013.
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Abstract
We evaluate the importance of changes in photosynthetic capacity, respiration rates, root shoot ratio, pipe model parameters and specific leaf area in the early-growth response of hybrid poplar to nitrogen availability. Juvenile growth simulations for trees with three different levels of leaf nitrogen concentration (Nleaf) (low (1.2%), medium (2.4%) and high (3.6%)) were conducted with the carbon-balance model CROBAS. Five-year growth simulations showed the diameter and height of poplar trees to be, respectively, four and three times larger in plants with 2.4% Nleaf compared with those with 1.2% Nleaf. Increasing Nleaf from 2.4 to 3.6% resulted in 34 and 16% higher diameter and height growth of trees. According to the model, changes in the photosynthetic capacity accounted for most of the differences in growth between trees with different levels of Nleaf; the other parameters were much less influential. This suggests that in fast-growing early-successional broadleaved species such as poplars, physiological rather than allocational and morphological traits predominate in determining growth, at least under non-limiting light conditions.
URI
http://hdl.handle.net/10459.1/68348
DOI
https://doi.org/10.1093/treephys/tpr013
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Tree Physiology, 2011, vol. 31, núm. 4, p. 381-390
European research projects
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  • Articles publicats (CTFC) [166]
  • Articles publicats (Enginyeria Agroforestal) [333]

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  • Growth, allocation and leaf gas exchanges of hybrid poplar plants in their establishment phase on previously forested sites: effect of different vegetation management techniques 

    Coll Mir, Lluís; Messier, Christian; Delagrange, Sylvain; Berninger, Frank (Institut National de la Recherche Agronomique (INRA)EDP Sciences, 2007-04-11)
    The effect of different vegetation control methods (mowing and cultivation between plantation rows, herbicide application and cover plant sowing) on hybrid poplar (P. maximowiczii $\times$ balsamifera) growth, biomass ...
  • Nitrogen forms affect root structure and water uptake in the hybrid poplar 

    Domenicano, Susy; Coll Mir, Lluís; Messier, Christian; Berninger, Frank (Springer Nature, 2011-03-02)
    The study analyses the effects of two different forms of nitrogen fertilisation (nitrate and ammonium) on root structure and water uptake of two hybrid poplar (Populus maximowiczii x P. balsamifera) clones in a field ...
  • Modelling the effect of climate-induced changes in recruitment and juvenile growth on mixed-forest dynamics: the case of montane-subalpine Pyrenean ecotones 

    Améztegui González, Aitor; Coll Mir, Lluís; Messier, Christian (Elsevier, 2015)
    Most predictive models forecast significant upward displacement of forest species due to increases in temperatures, but not all the species respond in the same way to changes in climate. In temperate or mountain systems, ...

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