Submicron structures provide preferential spots for carbon and nitrogen sequestration in soils
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Submicron structures provide preferential spots for carbon and nitrogen sequestration in soils. / Vogel, Cordula; Mueller, Carsten W.; Höschen, Carmen; Buegger, Franz; Heister, Katja; Schulz, Stefanie; Schloter, Michael; Kögel-Knabner, Ingrid.
In: Nature Communications, Vol. 5, 2947, 07.01.2014.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Submicron structures provide preferential spots for carbon and nitrogen sequestration in soils
AU - Vogel, Cordula
AU - Mueller, Carsten W.
AU - Höschen, Carmen
AU - Buegger, Franz
AU - Heister, Katja
AU - Schulz, Stefanie
AU - Schloter, Michael
AU - Kögel-Knabner, Ingrid
PY - 2014/1/7
Y1 - 2014/1/7
N2 - The sequestration of carbon and nitrogen by clay-sized particles in soils is well established, and clay content or mineral surface area has been used to estimate the sequestration potential of soils. Here, via incubation of a sieved (<2mm) topsoil with labelled litter, we find that only some of the clay-sized surfaces bind organic matter (OM). Surprisingly, <19% of the visible mineral areas show an OM attachment. OM is preferentially associated with organo-mineral clusters with rough surfaces. By combining nano-scale secondary ion mass spectrometry and isotopic tracing, we distinguish between new labelled and pre-existing OM and show that new OM is preferentially attached to already present organo-mineral clusters. These results, which provide evidence that only a limited proportion of the clay-sized surfaces contribute to OM sequestration, revolutionize our view of carbon sequestration in soils and the widely used carbon saturation estimates.
AB - The sequestration of carbon and nitrogen by clay-sized particles in soils is well established, and clay content or mineral surface area has been used to estimate the sequestration potential of soils. Here, via incubation of a sieved (<2mm) topsoil with labelled litter, we find that only some of the clay-sized surfaces bind organic matter (OM). Surprisingly, <19% of the visible mineral areas show an OM attachment. OM is preferentially associated with organo-mineral clusters with rough surfaces. By combining nano-scale secondary ion mass spectrometry and isotopic tracing, we distinguish between new labelled and pre-existing OM and show that new OM is preferentially attached to already present organo-mineral clusters. These results, which provide evidence that only a limited proportion of the clay-sized surfaces contribute to OM sequestration, revolutionize our view of carbon sequestration in soils and the widely used carbon saturation estimates.
U2 - 10.1038/ncomms3947
DO - 10.1038/ncomms3947
M3 - Journal article
AN - SCOPUS:84896797866
VL - 5
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
M1 - 2947
ER -
ID: 239161768