Biogeosciences
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Articles | Volume 14, issue 10
Articles | Volume 14, issue 10
https://doi.org/10.5194/bg-14-2627-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-14-2627-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 14, issue 10
Research article
 | 
24 May 2017
Research article |  | 24 May 2017

Limited protection of macro-aggregate-occluded organic carbon in Siberian steppe soils

Norbert Bischoff, Robert Mikutta, Olga Shibistova, Alexander Puzanov, Marina Silanteva, Anna Grebennikova, Roland Fuß, and Georg Guggenberger

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Short summary
This study set out to determine the quantity of organic carbon (OC) which is protected from microbial decomposition in macro-aggregates of Siberian steppe soils under different land use. Our results imply that the quantity of macro-aggregate protected OC is smaller than in similar steppe ecosystems like the North American prairies. We conclude that the tillage-induced breakdown of macro-aggregates after grassland to arable land conversion has not reduced the OC contents in the studied soils.
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