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DOI: | 10.1111/j.1469-8137.2007.01966.x |
Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2007.01966.x/full Last checked: 03/12/2012 Access conditions: Item is within a limited-access website http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2007.01966.x/pdf Last checked: 03/12/2012 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Hill, P. W.;
Marshall, C.;
Williams, G. G.;
Blum, H.;
Harmens, H.;
Jones, D. L.;
Farrar, J. F. |
Author Affiliation: | Hill, Marshall, Williams and Farrar: School of Biological Sciences; Jones: School of the Environment and Natural Resources, University of Wales Bangor; Harmens: Centre for Ecology and Hydrology, Bangor, Gwynedd, UK; Blum: Federal Institute of Technology (ETH) Zurich, Institute of Plant Sciences, Experimental Station Eschikon, Lindau, Switzerland |
Title: | The fate of photosynthetically-fixed carbon in Lolium perenne grassland as modified by elevated CO2 and sward management |
Source: | New Phytologist. Vol. 173, No. 4, March 2007, p. 766-777. |
Publishing Information: | Oxford, England: Blackwell Publishing, for the New Phytologist Trust |
# of Pages: | 12 |
Related Web URL: | http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2007.01966.x/abstract Last checked: 03/12/2012 Notes: Abstract only |
Keywords: | TIC Keywords: Carbon cycle; Carbon dioxide enrichment; Carbon sequestration; Chemical properties of soil; Climatic change; Defoliation; Lolium perenne; Nitrogen; Photosynthesis; Rhizodeposition
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Abstract/Contents: | "Prediction of the impact of climate change requires the response of carbon (C) flow in plant-soil systems to increased CO2 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 CO2 enrichment and two levels of nitrogen (N) fertilization for 10 yr, with 14CO2. Over a 6-d period 40-80% of the 14C 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 CO2 with the lower N supply fixed more 14C than swards grown in ambient CO2, exported more fixed 14C below ground and respired less than their high-N counterparts. Sward cutting reduced root 14C, but plants in elevated CO2 still retained 80% more 14C below ground than those in ambient CO2. The potential for below-ground C sequestration in grasslands is enhanced under elevated CO2, but any increase is likely to be small and dependent upon grassland management." |
Language: | English |
References: | 64 |
Note: | Summary as abstract Flowcharts Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Hill, P. W., C. Marshall, G. G. Williams, H. Blum, H. Harmens, D. L. Jones, et al. 2007. The fate of photosynthetically-fixed carbon in Lolium perenne grassland as modified by elevated CO2 and sward management. New Phytol. 173(4):p. 766-777. |
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| DOI: 10.1111/j.1469-8137.2007.01966.x |
| Web URL(s): http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2007.01966.x/full Last checked: 03/12/2012 Access conditions: Item is within a limited-access website http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2007.01966.x/pdf Last checked: 03/12/2012 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b2219226 |
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