Carbon isotope and C/N ratios of suspended matter in rivers: an indicator of seasonal change in C-4/C-3 vegetation
文献类型：期刊论文
| 作者 | Liu, WB; An, ZS; Zhou, WJ; Head, MJ; Cai, DL |
| 刊名 | APPLIED GEOCHEMISTRY
 |
| 出版日期 | 2003-08 |
| 卷号 | 18期号:8页码:1241-1249 |
| DOI | 10.1016/S0883-2927(02)00249-4 |
| 文献子类 | Article |
| 英文摘要 | A combination of delta C-13 values with C/N ratios in suspended matter has been used to examine the seasonal relationship between C-4 and C-3 vegetation along the Loess Plateau, NW China. The C isotopic composition of suspended organic matter in rivers, together with C/N ratios can differentiate between soil and plant material, and can be used to estimate the relative contributions of soil organic C and plant litter to the suspended matter. The relationship between C isotopic composition and C/N ratios indicates that the samples are a mixture of two end members: (1) modern soils with relatively constant delta C-13 values, low C content and low C/N ratios; (2) plant litter with varying delta C-13 values, high C content and high C/N ratios. The results reflect the seasonal distribution of C-4/C-3 vegetation within the area studied, as part of the Loess Plateau. The abundance Of C-4 grasses is about 20% for the current summer vegetation ecosystem in the eastern part of the Loess Plateau. Hence, the use of delta C-13 values and C/N ratios of suspended matter in rivers and modern soil may be useful for reflecting seasonal distribution of C-4/C-3 vegetation in catchments. This could be a useful tool for distinguishing between catchments for GIS studies, and long term planning for ecological management of catchment areas. (C) 2003 Elsevier Science Ltd. All rights reserved. |
| 学科主题 | Geochemistry & Geophysics |
| WOS关键词 | ORGANIC-MATTER ; QUANTUM YIELD ; DELTA-C-13 ; PALEOSOLS ; RECORD ; CYCLES ; KENYA ; C-3 |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000183966000009 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.ieecas.cn/handle/361006/11964]  |
| 专题 | 黄土与第四纪地质国家重点实验室（1985-2004） |
| 推荐引用方式 GB/T 7714 | Liu, WB,An, ZS,Zhou, WJ,et al. Carbon isotope and C/N ratios of suspended matter in rivers: an indicator of seasonal change in C-4/C-3 vegetation[J]. APPLIED GEOCHEMISTRY,2003,18(8):1241-1249. |
| APA | Liu, WB,An, ZS,Zhou, WJ,Head, MJ,&Cai, DL.(2003).Carbon isotope and C/N ratios of suspended matter in rivers: an indicator of seasonal change in C-4/C-3 vegetation.APPLIED GEOCHEMISTRY,18(8),1241-1249. |
| MLA | Liu, WB,et al."Carbon isotope and C/N ratios of suspended matter in rivers: an indicator of seasonal change in C-4/C-3 vegetation".APPLIED GEOCHEMISTRY 18.8(2003):1241-1249. |
入库方式： OAI收割
来源：地球环境研究所
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