Spatial and seasonal variability of organic carbon transport in the Yellow River, China
文献类型：期刊论文
| 作者 | Ran, Lishan1; Lu, X. X.1,2; Sun, Huiguo3; Han, Jingtai3; Li, Ronghua4; Zhang, Jianming4 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2013-08-19 |
| 卷号 | 498页码:76-88 |
| 关键词 | Dissolved organic carbon Particulate organic carbon Molar C/N ratio Spatial and seasonal variability Yellow River |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2013.06.018 |
| 文献子类 | Article |
| 英文摘要 | In this study, we examined the spatial and seasonal variability in the concentrations of dissolved and particulate organic carbon (DOC and POC) of the Yellow River. Weekly samples of water and suspended solids were collected along the main stem channel between July 2011 and July 2012 for the upstream Toudaoguai and Tongguan stations, and between August 2008 and July 2012 for the downstream Lijin station near the river mouth. The DOC export at the upstream two stations was primarily controlled by hydrological events such as melting of ice and snow with high DOC concentrations occurring in spring. In contrast, it was more affected by human activities, mainly reservoir regulation, at the lowermost Lijin station. Lower DOC concentration in the wet season indicates that most of the leachable DOC in surface soils may have largely been flushed away by spring floods. In addition, it is also likely due to dilution effect of the rapidly increased water discharge. As a result of low organic carbon content in the parent soils, the Yellow River sediments were characterized by low POC content (POC%). The averaged POC% at Toudaoguai, Tongguan, and Lijin was 0.48%, 0.47%, and 0.37%, respectively, which is significantly lower than the global mean of around 0.95%. The POC% decreased exponentially with total suspended solids (TSS) concentration. This is likely due to the dilution of riverine POC, because high TSS generally means a higher proportion of coarse sediments that have more mineral matter. During the study period, the total DOC and POC fluxes into the ocean were estimated at 0.06 x 10(12) g/yr and 0.41 x 10(12) g/yr, respectively. Combining our previous estimate of dissolved inorganic carbon (DIC) export shows that the Yellow River transports a carbon flux of 1.52 x 10(12) g/yr into the Bohai Sea, accounting for about 0.19% of the global total riverine carbon flux (DOC + POC + DIC). The extremely low DOC/POC ratio represents the lowest level among major world rivers, which is consistent with its intense soil erosion and highlights the effect of soil erosion on organic carbon export. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS关键词 | CLIMATE-CHANGE ; LOESS PLATEAU ; SEDIMENT LOAD ; CONTINENTAL EROSION ; CO2 CONSUMPTION ; TURBID RIVERS ; XIJIANG RIVER ; FLUXES ; MATTER ; IMPACTS |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000323688800007 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National University of Singapore(MOE2011-T2-1-101) ; National University of Singapore(MOE2011-T2-1-101) ; National University of Singapore(MOE2011-T2-1-101) ; National University of Singapore(MOE2011-T2-1-101) ; National University of Singapore(MOE2011-T2-1-101) ; National University of Singapore(MOE2011-T2-1-101) ; National University of Singapore(MOE2011-T2-1-101) ; National University of Singapore(MOE2011-T2-1-101) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/87780]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Ran, Lishan |
| 作者单位 | 1.Natl Univ Singapore, Dept Geog, Singapore 117570, Singapore 2.Inner Mongolia Univ, Coll Environm & Resources, Hohhot 010021, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 4.Yellow River Conservancy Commiss, Lijin Hydrol Gauge Stn, Lijin 257400, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ran, Lishan,Lu, X. X.,Sun, Huiguo,et al. Spatial and seasonal variability of organic carbon transport in the Yellow River, China[J]. JOURNAL OF HYDROLOGY,2013,498:76-88. |
| APA | Ran, Lishan,Lu, X. X.,Sun, Huiguo,Han, Jingtai,Li, Ronghua,&Zhang, Jianming.(2013).Spatial and seasonal variability of organic carbon transport in the Yellow River, China.JOURNAL OF HYDROLOGY,498,76-88. |
| MLA | Ran, Lishan,et al."Spatial and seasonal variability of organic carbon transport in the Yellow River, China".JOURNAL OF HYDROLOGY 498(2013):76-88. |
入库方式： OAI收割
来源：地质与地球物理研究所
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