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| Titel |
Multi-scale indicators for carbon storage as a key function of agricultural soils |
| VerfasserIn |
Martin Wiesmeier, Eva Rabot, Birgit Lang, Noelia Garcia Franco, Anna Kühnel, Ute Wollschläger, Hans-Jörg Vogel, Ingrid Kögel-Knabner |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250139907
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| Publikation (Nr.) |
 EGU/EGU2017-3227.pdf |
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| Zusammenfassung |
| Soil organic carbon (SOC) represents the largest carbon pool in terrestrial ecosystems and is a key constituent of soils that controls many soil functions, such as nutrient storage and supply, water storage and agricultural productivity. However, a comprehensive analysis of measureable indicators for the capacity of soils to store SOC at different spatial scales is missing so far. We performed a review of proposed indicators and proxies for the SOC storage capacity of agricultural soils with a focus on temperate agroecosystems. Several potential indicators for total SOC as well as labile and stable OC storage were identified and related to different spatial scales (global, landscape and field/plot scale). The silt- and clay-sized fraction is a promising indicator that enables a reliable estimation of stable SOC storage and the C sequestration potential in a site-specific context. In order to determine potential indicator parameters more efficiently, methodological advances such as adapted field tests, spectroscopic approaches and simplified fractionation methods are needed. |
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