20130603

Author : van Groenigen, K. J. Six, J. Hungate, B. A. de Graaff, M. A. van Breemen, N. van Kessel, C.
Year :  2006
Title : Element interactions limit soil carbon storage
Journal : Proceedings of the National Academy of Sciences of the United States of America
Comment :  By using metaanalysis, they found that elevated CO2 only causes accumulation of soil C when N is added at rates well above typical atmospheric N inputs. Because an increase in plant growth under elevated CO2 causes N to accumulate in litter and plant biomass, soil N availability is expected to limit plant growth under elevated CO2 in the long term without the addition of exogenous N. these approaches suggest a limited potential for rapid C storage in the terrestrial biosphere after an increase in atmospheric CO2.

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