Hydrodynamic sorting controls the transport and hampers source identification of terrigenous organic matter: A case study in East China Sea inner shelf and its implication
文献类型：期刊论文
| 作者 | Ji, Yinli; Feng, Lijuan; Zhang, Dahai; Wang, Qianqian; Pan, Gang; Li, Xianguo |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 706页码:1-10 |
| 关键词 | Sediment transport Lignin Hydrodynamic sorting Water elutriation Fast China Sea inner shelf |
| ISSN号 | 0048-9697 |
| 英文摘要 | Transport of terrigenous organic matter (TerOM) in marginal seas plays an important role in marine carbon cycle which is closely related to global climate change. Suspended particulates in East China Sea (ECS) inner shelf arc subject to strong influence of seasonally varied Zhc-Min Coastal Current (ZMCC) and Taiwan Warm Current (TWC). Transport of TerOM attached to the mineral particulates is therefore largely dependent on these hydrodynamic conditions. To address the transport pattern of TerOM in highly dynamic marginal seas and its implication, sediment samples were collected from ECS inner shelf and fractionated by water elutriation to simulate the hydrodynamic sorting process. Lignin phenols were determined for each fraction. The abundance of C phenols preferentially concentrated in the finer fractions, which is believed as a collective effect of hydrodynamic sorting, diagenetic reactivity and association preference of C phenols with finer sediments. In contrast to the expectation, sediments at the southernmost site did not have the highest mass percentage for the finest fraction, the lowest lignin abundance and the highest degradation status. Combining the results of lignin parameters with seawater temperature and salinity profiles, it is proposed that sediments are transported along the inner shelf southward in winter and northward in summer to some extent with the influence of seasonally varied ZMCC and TWC, induced by the seasonality of East Asia Monsoon (EAM). Finer grained sediments are more susceptible to this process. This transport pattern, which was only reported previously in ocean modeling, was firstly supported by the observation of lignin biomarkers. It is suggested that cross-shelf transport of sediments in ECS seems to be possible, but is complicated and is also affected by the seasonal variation of EAM. This study improved the understanding of hydrodynamic sorting on the transport of TerOM and carbon cycling in the marine system. Crown Copyright (C) 2018 Published by Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44944]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Ji, Yinli,Feng, Lijuan,Zhang, Dahai,et al. Hydrodynamic sorting controls the transport and hampers source identification of terrigenous organic matter: A case study in East China Sea inner shelf and its implication[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,706:1-10. |
| APA | Ji, Yinli,Feng, Lijuan,Zhang, Dahai,Wang, Qianqian,Pan, Gang,&Li, Xianguo.(2020).Hydrodynamic sorting controls the transport and hampers source identification of terrigenous organic matter: A case study in East China Sea inner shelf and its implication.SCIENCE OF THE TOTAL ENVIRONMENT,706,1-10. |
| MLA | Ji, Yinli,et al."Hydrodynamic sorting controls the transport and hampers source identification of terrigenous organic matter: A case study in East China Sea inner shelf and its implication".SCIENCE OF THE TOTAL ENVIRONMENT 706(2020):1-10. |
入库方式： OAI收割
来源：生态环境研究中心
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