Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 365228
Title Element interactions limit soil carbon storage
Author(s) Groenigen, K.J. van; Six, J.; Hungate, B.A.; Graaff, M.A. de; Breemen, N. van; Kessel, C. van
Source Proceedings of the National Academy of Sciences of the United States of America 103 (2006)17. - ISSN 0027-8424 - p. 6571 - 6574.
Department(s) Earth System Science
Laboratory of Soil Science and Geology
Publication type Refereed Article in a scientific journal
Publication year 2006
Keyword(s) elevated atmospheric co2 - biological nitrogen-fixation - ecosystem responses - climate-change - fine roots - grassland - forest - model - cycles - metaanalysis
Abstract Rising levels of atmospheric CO2 are thought to increase C sinks in terrestrial ecosystems. The potential of these sinks to mitigate CO2 emissions, however, may be constrained by nutrients. By using metaanalysis, we found that elevated CO2 only causes accumulation of soil C when N is added at rates well above typical atmospheric N inputs. Similarly, elevated CO2 only enhances N-2 fixation, the major natural process providing soil N input, when other nutrients (e.g., phosphorus, molybdenum, and potassium) are added. Hence, soil C sequestration under elevated CO2 is constrained both directly by IN availability and indirectly by nutrients needed to support N2 fixation.
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