This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1111/j.1365-3040.2010.02201.x in citations.
Soil [N] modulates soil C cycling in CO2-fumigated tree stands: a meta-analysis
Soil [N] modulates soil C cycling in CO2-fumigated tree stands: a meta-analysis
Under elevated atmospheric CO(2) concentrations, soil carbon (C) inputs are typically enhanced, suggesting larger soil C sequestration potential. However, soil C losses also increase and progressive nitrogen (N) limitation to plant growth may reduce the CO(2) effect on soil C inputs with time. We co...
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Personal Name(s): | Dieleman, W.I.J. |
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Luyssaert, S. / Rey, A. / De Angelis, P. / Barton, C.V.M. / Broadmeadow, M.S.J. / Broadmeadow, S.B. / Chigwerewe, K.S. / Crookshanks, M. / Dufrene, E. / Jarvis, P.G. / Kasurinen, A. / Kellomäki, S. / Le Dantec, V. / Liberloo, M. / Marek, M. / Medlyn, B. / Pokorny, R. / Scarascia-Mugnozza, G. / Temperton, V. M. / Tingey, D. / Urban, O. / Ceulemans, R. / Janssens, I.A. | |
Contributing Institute: |
Phytosphäre; ICG-3 |
Published in: | Plant, cell & environment, 33 (2010) S. 2001 - 2011 |
Imprint: |
Oxford [u.a.]
Wiley-Blackwell
2010
|
Physical Description: |
2001 - 2011 |
DOI: |
10.1111/j.1365-3040.2010.02201.x |
PubMed ID: |
20573048 |
Document Type: |
Journal Article |
Research Program: |
Terrestrische Umwelt |
Series Title: |
Plant, Cell and Environment
33 |
Subject (ZB): | |
Publikationsportal JuSER |
Under elevated atmospheric CO(2) concentrations, soil carbon (C) inputs are typically enhanced, suggesting larger soil C sequestration potential. However, soil C losses also increase and progressive nitrogen (N) limitation to plant growth may reduce the CO(2) effect on soil C inputs with time. We compiled a data set from 131 manipulation experiments, and used meta-analysis to test the hypotheses that: (1) elevated atmospheric CO(2) stimulates soil C inputs more than C losses, resulting in increasing soil C stocks; and (2) that these responses are modulated by N. Our results confirm that elevated CO(2) induces a C allocation shift towards below-ground biomass compartments. However, the increased soil C inputs were offset by increased heterotrophic respiration (Rh), such that soil C content was not affected by elevated CO(2). Soil N concentration strongly interacted with CO(2) fumigation: the effect of elevated CO(2) on fine root biomass and -production and on microbial activity increased with increasing soil N concentration, while the effect on soil C content decreased with increasing soil N concentration. These results suggest that both plant growth and microbial activity responses to elevated CO(2) are modulated by N availability, and that it is essential to account for soil N concentration in C cycling analyses. |