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231223s2007 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2006.01926.x
|2 doi
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|e rakwb
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|a eng
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|a Liberloo, Marion
|e verfasserin
|4 aut
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|a Photosynthetic stimulation under long-term CO2 enrichment and fertilization is sustained across a closed Populus canopy profile (EUROFACE)
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 21.03.2007
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|a Date Revised 14.04.2021
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|a published: Print
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|a Citation Status MEDLINE
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|a The long-term response of leaf photosynthesis to rising CO2 concentrations [CO2] depends on biochemical and morphological feedbacks. Additionally, responses to elevated [CO2] might depend on the nutrient availability and the light environment, affecting the net carbon uptake of a forest stand. After 6 yr of exposure to free-air CO2 enrichment (EUROFACE) during two rotation cycles (with fertilization during the second cycle), profiles of light, leaf characteristics and photosynthetic parameters were measured in the closed canopy of a poplar (Populus) short-rotation coppice. Net photosynthetic rate (A(growth)) was 49% higher in poplars grown in elevated [CO2], independently of the canopy position. Jmax significantly increased (15%), whereas leaf carboxylation capacity (Vcmax), leaf nitrogen (N(a)) and chlorophyll (Chl(a)) were unaffected in elevated [CO2]. Leaf mass per unit area (LMA) increased in the upper canopy. Fertilization created more leaves in the top of the crown. These results suggest that the photosynthetic stimulation by elevated [CO2] in a closed-canopy poplar coppice might be sustained in the long term. The absence of any down-regulation, given a sufficient sink capacity and nutrient availability, provides more carbon for growth and storage in this bioenergy plantation
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Fertilizers
|2 NLM
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|a Chlorophyll
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|a 1406-65-1
|2 NLM
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|a Carbon Dioxide
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|a 142M471B3J
|2 NLM
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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|a Tulva, Ingmar
|e verfasserin
|4 aut
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|a Raïm, Olaf
|e verfasserin
|4 aut
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|a Kull, Olevi
|e verfasserin
|4 aut
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|a Ceulemans, Reinhart
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 173(2007), 3 vom: 31., Seite 537-549
|w (DE-627)NLM09818248X
|x 1469-8137
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|g volume:173
|g year:2007
|g number:3
|g day:31
|g pages:537-549
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|u http://dx.doi.org/10.1111/j.1469-8137.2006.01926.x
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