TY  - JOUR
AU  - Dieleman, W.I.J.
AU  - Luyssaert, S.
AU  - Rey, A.
AU  - De Angelis, P.
AU  - Barton, C.V.M.
AU  - Broadmeadow, M.S.J.
AU  - Broadmeadow, S.B.
AU  - Chigwerewe, K.S.
AU  - Crookshanks, M.
AU  - Dufrene, E.
AU  - Jarvis, P.G.
AU  - Kasurinen, A.
AU  - Kellomäki, S.
AU  - Le Dantec, V.
AU  - Liberloo, M.
AU  - Marek, M.
AU  - Medlyn, B.
AU  - Pokorny, R.
AU  - Scarascia-Mugnozza, G.
AU  - Temperton, V. M.
AU  - Tingey, D.
AU  - Urban, O.
AU  - Ceulemans, R.
AU  - Janssens, I.A.
TI  - Soil [N] modulates soil C cycling in CO2-fumigated tree stands: a meta-analysis
JO  - Plant, cell & environment
VL  - 33
SN  - 0140-7791
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - PreJuSER-10926
SP  - 2001 - 2011
PY  - 2010
N1  - We thank L. E. Henry and K. Pregitzer for providing data, as well as C. Korner for useful information about their experimental sites. Special thanks go to the researchers of the ECOCRAFT [Framework programmes of the EC (EC contracts within 5FP and 6FP, Environment and Research)] and the EUROFACE projects, who provided the large number of data that formed the foundation for this paper. M. L. is a postdoctoral research associate of the Flemish Science Foundation FWO (Fonds Wetenschappelijk onderzoek, FWO Vlaanderen). I.J. holds an FWO research grant, and S. L. holds a European Research Council (ERC) grant. Part of this research has been funded through the UA-Research Centre of Excellence ECO.
AB  - 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.
KW  - Atmosphere
KW  - Biomass
KW  - Carbon Cycle
KW  - Carbon Dioxide
KW  - Fertilizers
KW  - Nitrogen Cycle
KW  - Soil: analysis
KW  - Trees: growth & development
KW  - Fertilizers (NLM Chemicals)
KW  - Soil (NLM Chemicals)
KW  - Carbon Dioxide (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:20573048
UR  - <Go to ISI:>//WOS:000284166500001
DO  - DOI:10.1111/j.1365-3040.2010.02201.x
UR  - https://juser.fz-juelich.de/record/10926
ER  -