| DOI: | 10.1007/s10533-013-9943-0
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| Scopus记录号: | 2-s2.0-84900822548
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| 论文题名: | Biodegradation of ferrihydrite-associated organic matter |
| 作者: | Eusterhues K.; Neidhardt J.; Hädrich A.; Küsel K.; Totsche K.U.
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| 刊名: | Biogeochemistry
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| ISSN: | 0168-2563
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| EISSN: | 1573-515X
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| 出版年: | 2014
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| 卷: | 119, 期:2018-01-03 | | 起始页码: | 45
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| 结束页码: | 50
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| 语种: | 英语
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| 英文关键词: | Adsorption
; Carbon cycling
; Carbon sequestration
; Coprecipitation
; Organic matter stabilization
; Organo-mineral associations
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| Scopus关键词: | adsorption
; biodegradation
; carbon sequestration
; ferrihydrite
; Podzol
; precipitation (climatology)
; soil organic matter
; stabilization
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| 英文摘要: | The association of organic molecules with mineral surfaces is a major mechanism to stabilize soil organic matter against biodegradation. We performed microbial incubation experiments to quantify the mineralization of soil organic matter associated with ferrihydrite by adsorption and coprecipitation. Samples were produced using either water-extractable organic matter of a Podzol forest-floor layer (FFE) or a sulfonated lignin. Incubation was carried out with an inoculum extracted from the forest-floor layer under oxic conditions at pH 4.8 over 68 days. Our data show that the association with ferrihydrite stabilized the associated organic matter: the degradation of the polysaccharide-rich FFE was slowed down, while the degradation of lignin was inhibited. Since differences in the degradability of adsorbed and coprecipitated organic matter were small, we conclude that coprecipitation did not lead to a significant formation of microbial inaccessible organic matter domains in our experiments. © 2014 Springer Science+Business Media Dordrecht. |
| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/83642
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| Appears in Collections: | 气候减缓与适应
气候变化事实与影响
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作者单位: | Institut für Geowissenschaften, Friedrich-Schiller-Universität Jena, Burgweg 11, 07749 Jena, Germany; Institut für Ökologie, Friedrich-Schiller-Universität Jena, Dornburger Strasse 159, 07743 Jena, Germany
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| Recommended Citation: | |
Eusterhues K.,Neidhardt J.,Hädrich A.,et al. Biodegradation of ferrihydrite-associated organic matter[J]. Biogeochemistry,2014-01-01,119(2018-01-03)
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