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Biogeosciences An interactive open-access journal of the European Geosciences Union
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BG | Volume 16, issue 7
Biogeosciences, 16, 1401–1410, 2019
https://doi.org/10.5194/bg-16-1401-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 16, 1401–1410, 2019
https://doi.org/10.5194/bg-16-1401-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 05 Apr 2019

Research article | 05 Apr 2019

Multidecadal persistence of organic matter in soils: multiscale investigations down to the submicron scale

Suzanne Lutfalla et al.
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Short summary
Soils store large amounts of carbon in soil organic matter, which comes from plant debris and roots. The mechanisms protecting it from biodegradation are not fully understood. Here, we carry out a size-fractionation of soil sampled on different dates in a field experiment. Using carbon and nitrogen content and spectroscopy and microscopy we conclude that organic matter enriched in nitrogen is preferentially protected from biodegradation and that clay minerals have differing protective abilities.
Soils store large amounts of carbon in soil organic matter, which comes from plant debris and...
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