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| Titel |
Exchange of carbonyl sulfide (COS) between the atmosphere and various soils in China |
| VerfasserIn |
J. Liu, C. Geng, Y. Mu, Y. Zhang, Z. Xu, H. Wu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 7, no. 2 ; Nr. 7, no. 2 (2010-02-25), S.753-762 |
| Datensatznummer |
250004500
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| Publikation (Nr.) |
 copernicus.org/bg-7-753-2010.pdf |
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| Zusammenfassung |
| Using a dynamic enclosure, the exchange rates of carbonyl sulfide (COS)
between the atmosphere and 18 soils from 12 provinces in China were
investigated. The emission or uptake of COS from the soils was highly
dependent on the soil type, soil temperature, soil moisture, and atmospheric
COS mixing ratio. In general, with the only exception being paddy soils, the
soils in this investigation acted as sinks for atmospheric COS under wide
ranges of soil temperature and soil moisture. Two intensively investigated
wheat soils and one forest soil had optimal soil temperatures for COS uptake
of around 15 °C, and the optimal soil water content varied from 13% to
58%. COS emission rates from the two paddy soils increased exponentially
with increment of the soil temperature, and decreased with increasing the
soil water content. However, negligible emission was found when the paddy
soils were under waterlogging status. The observed compensation points for
various soils were different and increased significantly with soil
temperature. The laboratory simulation agreed with the preliminary field
measurements for the paddy soil in Jiaxing, Zhejiang province. |
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