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| Titel |
Organic carbon in Russian soils: A specified spatially explicit assessment |
| VerfasserIn |
Dmitry Schepaschenko, Anatoly Shvidenko, Lyudmila Mukhortova |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250055843
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| Zusammenfassung |
| There are several estimations of soil organic carbon of Russia (Orlov et al., 1996;
Rozhkov et al., 1996; Alexeyev, Birdsey, 1998; Nilsson et al., 2000; Stolbovoi,
2002; Chestnyh et al., 2004; etc.) which presented a large range of reported stock of
carbon, particularly for individual land classes (forest, wetland etc.). In order to
provide the most reliable estimate, we developed an aggregated model which attempts
to apply advantages of methods used in the above publications. The approach is
based on overlay of soil information: Russian Soil map 1:2.5M (Fridland, 1988),
database of typical soil profiles and detailed hybrid land use / land cover dataset
(Schepaschenko et al., 2010). The land cover dataset contains the most recent and
special explicit land use information with the resolution of 1 km. Updated and
corrected database on soil profiles and number of modeling clarifications have been
introduced (corrections for the method used for empirical assessment of soil carbon, land
use type, regional and vegetation specifics). The method is realized in a form of a
dynamic system, which is able to assimilate any new information on soil and land
use.
The results are represented by soil organic carbon map, which is parameterized by each 1
km pixel. It contains two layers: onground organic layer (OL) and 1 meter of soil. Total
amount of organic carbon accumulated in Russian soil assessed as 323 Pg C. The most
dynamic part – onground organic layer comprises 16 Pg C. The average carbon content is
19.5 kg C m-2 (0.94 in the OL). Forest soils has less average carbon content (18.2
kg C m-2), but higher OL (1.13 kg C m-2). More information is available here:
http://www.iiasa.ac.at/Research/FOR/hlc/ |
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