Characterization of soil organic matter fractions from grassland and cultivated soils via C content and delta C-13 signature
文献类型：期刊论文
| 作者 | Accoe, F ; Boeckx, P ; Van Cleemput, O ; Hofman, G ; Hui, X ; Bin, H ; Chen, GX |
| 刊名 | RAPID COMMUNICATIONS IN MASS SPECTROMETRY
 |
| 出版日期 | 2002 |
| 卷号 | 16期号:23页码:2157-2164 |
| ISSN号 | 0951-4198 |
| 通讯作者 | Accoe, F, State Univ Ghent, Fac Agr & Appl Biol Sci, Dept Appl Analyt & Phys Chem, Coupure Links 653, B-9000 Ghent, Belgium |
| 中文摘要 | Variations in C-13 natural abundance and distribution of total C among five size and density fractions of soil organic matter, water soluble organic C (WSOC) and microbial biomass C (MBC) were investigated in the upper layer (0-20 cm) of a continuous grassland soil (CG, C-3 vegetation), a C-3-humus soil converted to continuous maize cultivation (CM, C-4 vegetation) and a C-3-humus soil converted to a rotation of maize cultivation and grassland (R). The amounts of WSOC and MBC were both significantly larger in the CG than in the CM and the R. In the three soils, WSOC was depleted while MBC was enriched in C-13 as compared with whole soil C. The relative contributions to the total C content of C stored in the macro-organic matter and in the size fraction 50-150 mum decreased with decreasing total C contents in the order CG > R > CM, while the relative contribution of C associated with the clay- and silt-sized fraction <50 mum increased. This reflects a greater stability and physical protection against microbial degradation associated with soil disruption (tillage) of the clay- and silt-associated organic C, in relation to the organic C in larger size fractions. The size and density fractions from the CG soil showed significant differences in C-13 enrichment, indicating different degrees of microbial degradation and stability of soil organic C associated with physically different soil organic matter (SOM) fractions. delta(13)C analysis of the size and density fractions from CM and R soils reflected a decreasing turnover rate of soil organic C with increasing density among the macro-organic matter fractions and with decreasing particle size. Copyright (C) 2002 John Wiley Sons, Ltd. |
| 学科主题 | Chemistry, Analytical; Spectroscopy |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000179570800001 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/55435]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所_期刊论文 |
| 推荐引用方式 GB/T 7714 | Accoe, F,Boeckx, P,Van Cleemput, O,et al. Characterization of soil organic matter fractions from grassland and cultivated soils via C content and delta C-13 signature[J]. RAPID COMMUNICATIONS IN MASS SPECTROMETRY,2002,16(23):2157-2164. |
| APA | Accoe, F.,Boeckx, P.,Van Cleemput, O.,Hofman, G.,Hui, X.,...&Chen, GX.(2002).Characterization of soil organic matter fractions from grassland and cultivated soils via C content and delta C-13 signature.RAPID COMMUNICATIONS IN MASS SPECTROMETRY,16(23),2157-2164. |
| MLA | Accoe, F,et al."Characterization of soil organic matter fractions from grassland and cultivated soils via C content and delta C-13 signature".RAPID COMMUNICATIONS IN MASS SPECTROMETRY 16.23(2002):2157-2164. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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