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| Titel |
Organic carbon in topsoil - first time fully harmonised at a European scale |
| VerfasserIn |
Vibeke Ernstsen, Rainer Baritz, Clemens Reiman, GEMAS Project Team |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250084785
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| Zusammenfassung |
| The organic fraction of soils often accounts for an only small but variable proportion of the
total soil mass. Nevertheless the organic fraction profoundly influences e.g., soil properties,
ecosystem functioning, and the magnitude of various ecosystem processes. In the cooperative
project of Geochemical Mapping of Agricultural and grazing land Soil (GEMAS) a total of
2018 samples of agricultural (ploughed land, 0-20 cm) and 2023 samples of grazing land
(0-10 cm) soil were collected at a density of 1 site per 2500 km2 each from 33 European
countries, covering an area of 5,600,000 km2. All soil samples were sampled following a
jointly agreed field protocol. The contents of TOC show large local differences
with the highest concentrations of TOC in Finland, Ireland and Norway but also in
other countries like e.g., Sweden, United Kingdom, and Germany distinctively high
concentrations were measured. The distribution of TOC can be related to other
measured soil properties like CEC, pH (CaCl2) and e.g., 52 chemical elements
following an agua regia extraction. The GEMAS project has provided for the first time a
fully harmonised data on TOC (and many other parameters) at a European scale. |
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