Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 25607 |
| Fachzeitschrift | Scientific reports |
| Jahrgang | 6 |
| Publikationsstatus | Veröffentlicht - 9 Mai 2016 |
Abstract
Arctic ecosystems are warming rapidly, which is expected to promote soil organic matter (SOM) decomposition. In addition to the direct warming effect, decomposition can also be indirectly stimulated via increased plant productivity and plant-soil C allocation, and this so called € priming effect € might significantly alter the ecosystem C balance. In this study, we provide first mechanistic insights into the susceptibility of SOM decomposition in arctic permafrost soils to priming. By comparing 119 soils from four locations across the Siberian Arctic that cover all horizons of active layer and upper permafrost, we found that an increased availability of plant-derived organic C particularly stimulated decomposition in subsoil horizons where most of the arctic soil carbon is located. Considering the 1,035 Pg of arctic soil carbon, such an additional stimulation of decomposition beyond the direct temperature effect can accelerate net ecosystem C losses, and amplify the positive feedback to global warming.
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in: Scientific reports, Jahrgang 6, 25607, 09.05.2016.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Plant-derived compounds stimulate the decomposition of organic matter in arctic permafrost soils
AU - Wild, Birgit
AU - Gentsch, Norman
AU - Capek, Petr
AU - Diáková, Katerina
AU - Alves, Ricardo J.Eloy
AU - Bárta, Jiri
AU - Gittel, Antje
AU - Hugelius, Gustaf
AU - Knoltsch, Anna
AU - Kuhry, Peter
AU - Lashchinskiy, Nikolay
AU - Mikutta, Robert
AU - Palmtag, Juri
AU - Schleper, Christa
AU - Schnecker, Jörg
AU - Shibistova, Olga
AU - Takriti, Mounir
AU - Torsvik, Vigdis L.
AU - Urich, Tim
AU - Watzka, Margarete
AU - Šantrūcková, Hana
AU - Guggenberger, Georg
AU - Richter, Andreas
PY - 2016/5/9
Y1 - 2016/5/9
N2 - Arctic ecosystems are warming rapidly, which is expected to promote soil organic matter (SOM) decomposition. In addition to the direct warming effect, decomposition can also be indirectly stimulated via increased plant productivity and plant-soil C allocation, and this so called € priming effect € might significantly alter the ecosystem C balance. In this study, we provide first mechanistic insights into the susceptibility of SOM decomposition in arctic permafrost soils to priming. By comparing 119 soils from four locations across the Siberian Arctic that cover all horizons of active layer and upper permafrost, we found that an increased availability of plant-derived organic C particularly stimulated decomposition in subsoil horizons where most of the arctic soil carbon is located. Considering the 1,035 Pg of arctic soil carbon, such an additional stimulation of decomposition beyond the direct temperature effect can accelerate net ecosystem C losses, and amplify the positive feedback to global warming.
AB - Arctic ecosystems are warming rapidly, which is expected to promote soil organic matter (SOM) decomposition. In addition to the direct warming effect, decomposition can also be indirectly stimulated via increased plant productivity and plant-soil C allocation, and this so called € priming effect € might significantly alter the ecosystem C balance. In this study, we provide first mechanistic insights into the susceptibility of SOM decomposition in arctic permafrost soils to priming. By comparing 119 soils from four locations across the Siberian Arctic that cover all horizons of active layer and upper permafrost, we found that an increased availability of plant-derived organic C particularly stimulated decomposition in subsoil horizons where most of the arctic soil carbon is located. Considering the 1,035 Pg of arctic soil carbon, such an additional stimulation of decomposition beyond the direct temperature effect can accelerate net ecosystem C losses, and amplify the positive feedback to global warming.
UR - http://www.scopus.com/inward/record.url?scp=84971283906&partnerID=8YFLogxK
U2 - 10.1038/srep25607
DO - 10.1038/srep25607
M3 - Article
AN - SCOPUS:84971283906
VL - 6
JO - Scientific reports
JF - Scientific reports
SN - 2045-2322
M1 - 25607
ER -