DOI: 10.1016/j.scitotenv.2019.135699
论文题名: 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
作者: Ji Y. ; Feng L. ; Zhang D. ; Wang Q. ; Pan G. ; Li X.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 706 语种: 英语
英文关键词: East China Sea inner shelf
; Hydrodynamic sorting
; Lignin
; Sediment transport
; Water elutriation
Scopus关键词: Biogeochemistry
; Carbon
; Climate change
; Particles (particulate matter)
; Phenols
; Sediment transport
; East China Sea
; Global climate changes
; Hydrodynamic conditions
; Marine carbon cycle
; Mineral particulates
; Seawater temperature
; Source identification
; Suspended particulates
; Lignin
; carbon
; lignin
; mineral
; organic matter
; phenol derivative
; sea water
; terrigenous organic matter
; unclassified drug
; water
; hydrodynamics
; lignin
; marginal sea
; organic matter
; phenol
; sediment transport
; sorting
; source identification
; suspended particulate matter
; Article
; carbon cycle
; carbon cycling
; climate change
; controlled study
; degradation
; East China Sea
; environmental aspects and related phenomena
; environmental impact
; estuary
; hydrodynamic sorting
; hydrodynamics
; particle size
; priority journal
; salinity
; sea
; sea surface temperature
; seashore
; seasonal variation
; sediment
; sediment transport
; simulation
; suspended particulate matter
; Taiwan
; vegetation
; Carbon
; Organic Matter
; Phenols
; Processes
; Sediments
; Sorting
; Transport
; East China Sea
; Pacific Ocean
; Taiwan Warm Current
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 are subject to strong influence of seasonally varied Zhe-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. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158867
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Key Laboratory of Marine Chemistry Theory and Technology (Ocean University of China), Ministry of Education, Qingdao, 266100, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Animal, Rural, and Environmental Sciences, Nottingham Trent University, Nottingham, NG25 0QF, United Kingdom
Recommended Citation:
Ji Y.,Feng L.,Zhang D.,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,2020-01-01,706