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Elevated CO2 concentration, fertilization and their interaction: growth stimulation in a short-rotation poplar (Articolo in rivista)
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- Elevated CO2 concentration, fertilization and their interaction: growth stimulation in a short-rotation poplar (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Alternative label
Liberloo, M; Dillen, SY; Calfapietra, C; Marinari, S; Bin Luo, Z; De Angelis, P; Ceulemans, R (2005)
Elevated CO2 concentration, fertilization and their interaction: growth stimulation in a short-rotation poplar
in Tree physiology
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Liberloo, M; Dillen, SY; Calfapietra, C; Marinari, S; Bin Luo, Z; De Angelis, P; Ceulemans, R (literal)
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- ISI Web of Science (WOS) (literal)
- Titolo
- Elevated CO2 concentration, fertilization and their interaction: growth stimulation in a short-rotation poplar (literal)
- Abstract
- We investigated the individual and combined effects of elevated CO2 concentration and fertilization on
above-ground growth of three poplar species (Populus alba L. Clone 2AS-11, P. nigra L. Clone Jean Pourtet and P. x
euramericana Clone I-214) growing in a short-rotation coppice culture for two growing seasons after coppicing.
Free-air carbon dioxide enrichment (FACE) stimulated the number of shoots per stool, leaf area index measured
with a fish-eye-type plant canopy analyzer (LAI(optical)), and annual leaf production, but did not affect dominant
shoot height or canopy productivity index. Comparison of LAI(optical) with LAI estimates from litter collections
and from allometric relationships showed considerable differences. The increase in biomass in response to FACE
was caused by an initial stimulation of absolute and relative growth rates, which disappeared after the first growing
season following coppicing. An ontogenetic decline in growth in the FACE treatment, together with strong
competition inside the dense plantation, may have caused this decrease. Fertilization did not influence aboveground
growth, although some FACE responses were more pronounced in fertilized trees. A species effect was observed for
most parameters (literal)
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