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231223s2007 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2007.01966.x
|2 doi
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|a eng
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|a Hill, P W
|e verfasserin
|4 aut
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|a The fate of photosynthetically-fixed carbon in Lolium perenne grassland as modified by elevated CO2 and sward management
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 14.06.2007
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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 Prediction of the impact of climate change requires the response of carbon (C) flow in plant-soil systems to increased CO(2) to be understood. A mechanism by which grassland C sequestration might be altered was investigated by pulse-labelling Lolium perenne swards, which had been subject to CO(2) enrichment and two levels of nitrogen (N) fertilization for 10 yr, with (14)CO(2). Over a 6-d period 40-80% of the (14)C pulse was exported from mature leaves, 1-2% remained in roots, 2-7% was lost as below-ground respiration, 0.1% was recovered in soil solution, and 0.2-1.5% in soil. Swards under elevated CO(2) with the lower N supply fixed more (14)C than swards grown in ambient CO(2), exported more fixed (14)C below ground and respired less than their high-N counterparts. Sward cutting reduced root (14)C, but plants in elevated CO(2) still retained 80% more (14)C below ground than those in ambient CO(2). The potential for below-ground C sequestration in grasslands is enhanced under elevated CO(2), but any increase is likely to be small and dependent upon grassland management
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Soil
|2 NLM
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|a Carbon Dioxide
|2 NLM
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|a Carbon
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|a Nitrogen
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|2 NLM
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|a Marshall, C
|e verfasserin
|4 aut
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|a Williams, G G
|e verfasserin
|4 aut
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|a Blum, H
|e verfasserin
|4 aut
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|a Harmens, H
|e verfasserin
|4 aut
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|a Jones, D L
|e verfasserin
|4 aut
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|a Farrar, J F
|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), 4 vom: 01., Seite 766-777
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:173
|g year:2007
|g number:4
|g day:01
|g pages:766-777
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|u http://dx.doi.org/10.1111/j.1469-8137.2007.01966.x
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