title: Stability and biodegradability of organic matter from Arctic soils ofWestern Siberia: insights from 13C-NMR spectroscopy and elemental analysis
metadata.name: dc.contributor.author
metadata.value: Abakumov, Evgeny
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2016-04-02T11:41:40Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2016-04-02T11:41:40Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2016-01
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: E. Ejarque and E. Abakumov Stability and biodegradability of organic matter from Arctic soils ofWestern Siberia: insights from 13C-NMR spectroscopy and elemental analysis // Solid Earth, 2016, 7, 153-165
metadata.lang: en_GB
metadata.name: dc.identifier.issn
metadata.value: 1869-9510
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/1888
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Arctic soils contain large amounts of organic matter
  which, globally, exceed the amount of carbon stored in
  vegetation biomass and in the atmosphere. Recent studies
  emphasise the potential sensitivity for this soil organic matter
  (SOM) to be mineralised when faced with increasing ambient
  temperatures. In order to better refine the predictions
  about the response of SOM to climate warming, there is a
  need to increase the spatial coverage of empirical data on
  SOM quantity and quality in the Arctic area. This study provides,
  for the first time, a characterisation of SOM from the
  Gydan Peninsula in the Yamal Region,Western Siberia, Russia.
  On the one hand, soil humic acids and their humification
  state were characterised by measuring the elemental
  composition and diversity of functional groups using solidstate
  13C-nuclear magnetic resonance (NMR) spectroscopy.
  Also, the total mineralisable carbon was measured. Our results
  indicate that there is a predominance of aliphatic carbon
  structures, with a minimal variation of their functional-group
  composition both regionally and within soil depth. This vertical
  homogeneity and low level of aromaticity reflects the
  accumulation in soil of lowly decomposed organic matter
  due to cold temperatures. Mineralisation rates were found to
  be independent of SOM quality, and to be mainly explained
  solely by the total carbon content. Overall, our results provide
  further evidence on the sensitivity that the soils ofWestern
  Siberia may have to increasing ambient temperatures and
  highlight the important role that this region can play in the
  global carbon balance under the effects of climate warming.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: This study was supported by the Russian president
  grant for Young Doctors of Science “Complex investigation
  of soil diversity and ecological functions of Northern part of Western
  Siberia on example of Yamal and Gydan peninsula” (MD 3615-
  2015-4), as well as by the Russian Foundation for Basic Research
  project for young doctors and candidates of sciences (16-34-60010).
  Analytical analyses were performed at the Centre for Magnetic Resonance
  and at the Centre for Chemical Analysis and Materials Research
  of Research Park of St Petersburg State University.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en_US
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: European Geosciences Union
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: 7;
metadata.lang: -
metadata.name: dc.subject
metadata.value: soils
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: 13-NMR
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Yamal
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Gydan
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Stability and biodegradability of organic matter from Arctic soils ofWestern Siberia: insights from 13C-NMR spectroscopy and elemental analysis
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: SOLID EARTH.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/1888/1/SOLID%20EARTH.pdf
resources.format: Adobe PDF
resources.size: 1,96 MB