Effects of environmental and biotic factors on carbon isotopic fractionation during decomposition of soil organic matter
文献类型：期刊论文
| 作者 | Wang, Guoan1; Jia, Yufu1; Li, Wei2
|
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2015-06-09 |
| 卷号 | 5页码:DOI: 10.1038/srep11043 |
| 关键词 | Science & Technology |
| ISSN号 | 2045-2322 |
| 通讯作者 | Wang, Guoan |
| 英文摘要 | Decomposition of soil organic matter (SOM) plays an important role in the global carbon cycle because the CO2 emitted from soil respiration is an important source of atmospheric CO2. Carbon isotopic fractionation occurs during SOM decomposition, which leads to C-12 to enrich in the released CO2 while C-13 to enrich in the residual SOM. Understanding the isotope fractionation has been demonstrated to be helpful for studying the global carbon cycle. Soil and litter samples were collected from soil profiles at 27 different sites located along a vertical transect from 1200 to 4500 m above sea level (a.s.l.) in the south-eastern side of the Tibetan Plateau. Their carbon isotope ratios, C and N concentrations were measured. In addition, fiber and lignin in litter samples were also analyzed. Carbon isotope fractionation factor (a) during SOM decomposition was estimated indirectly as the slope of the relationship between carbon isotope ratios of SOM and soil C concentrations. This study shows that litter quality and soil water play a significant role in isotope fractionation during SOM decomposition, and the carbon isotope fractionation factor, a, increases with litter quality and soil water content. However, we found that temperature had no significant impact on the a variance. |
| WOS标题词 | Science & Technology |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | THEORETICAL-ANALYSIS ; PALEOVEGETATION RECONSTRUCTION ; FOREST SOIL ; DELTA-C-13 ; TEMPERATURE ; LITTER ; PLANTS ; DISCRIMINATION ; TRANSFORMATION ; PRECIPITATION |
| 收录类别 | SCI |
| 原文出处 | http://www.nature.com/srep/2015/150609/srep11043/full/srep11043.html |
| 语种 | 英语 |
| WOS记录号 | WOS:000356083600001 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/10492]  |
| 专题 | 中国科学院水利部成都山地灾害与环境研究所 |
| 作者单位 | 1.China Agr Univ, Dept Environm Sci & Engn, Coll Resources & Environm Sci, Beijing 100193, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Guoan,Jia, Yufu,Li, Wei. Effects of environmental and biotic factors on carbon isotopic fractionation during decomposition of soil organic matter[J]. SCIENTIFIC REPORTS,2015,5:DOI: 10.1038/srep11043. |
| APA | Wang, Guoan,Jia, Yufu,&Li, Wei.(2015).Effects of environmental and biotic factors on carbon isotopic fractionation during decomposition of soil organic matter.SCIENTIFIC REPORTS,5,DOI: 10.1038/srep11043. |
| MLA | Wang, Guoan,et al."Effects of environmental and biotic factors on carbon isotopic fractionation during decomposition of soil organic matter".SCIENTIFIC REPORTS 5(2015):DOI: 10.1038/srep11043. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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