Microbial biomass and soil organic carbon accumulation on a former lakebed near Novosibirsk, Russia

Microbial biomass and soil organic carbon accumulation on a former lakebed near Novosibirsk, Russia

Shrinking of Lake Chany in W Siberia exposed 10,000 km² of former lakebed. On this new land we studied a chronosequence of young soils. The fraction of microbial C in total organic C had stabilized at 3% after 30 to 40 y. Concentration of organic C increased within the first 50 to 100 y to 4–5% in t...

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Veröffentlicht in:Journal of plant nutrition and soil science 2016-04, Vol.179 (2), p.190-192
Hauptverfasser: Yakutin, Mikhail. V, Anopchenko, L, Conen, F
Format: Artikel
Sprache:eng
Schlagworte:
carbon dioxide
chronosequence
chronosequences
greenhouse gas emissions
lakes
metabolic quotient
microbial biomass
salinity
soil
soil carbon
soil organic carbon
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Zusammenfassung:Shrinking of Lake Chany in W Siberia exposed 10,000 km² of former lakebed. On this new land we studied a chronosequence of young soils. The fraction of microbial C in total organic C had stabilized at 3% after 30 to 40 y. Concentration of organic C increased within the first 50 to 100 y to 4–5% in the first 10 cm, and to 2–3% at 10–20 cm depth. The amount of sequestered C is equivalent to about 2.5 d of current anthropogenic CO₂ emissions.
ISSN:1436-8730
1522-2624
DOI:10.1002/jpln.201500459