Distribution of organic matter in the Changjiang (Yangtze River) Estuary and their stable carbon and nitrogen isotopic ratios: Implications for source discrimination and sedimentary dynamics

被引：215
作者：
Zhang, J.
Wu, Y.
Jennejahn, T. C.
Ittekkot, V.
He, Q.
机构：
[1] E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China
[2] Ctr Trop Marine Ecol, D-28359 Bremen, Germany
[3] Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266003, Peoples R China
来源：
MARINE CHEMISTRY | 2007年 / 106卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
Changjiang estuary; total suspended matter; particulate organic carbon; particulate nitrogen; stable carbon and nitrogen isotopes;
D O I：
10.1016/j.marchem.2007.02.003
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Organic carbon and total nitrogen as well as stable carbon (delta C-13(org)) and nitrogen (delta N-15) isotopic ratios were determined on suspended matter, settling particles and bottom sediments collected from the Changjiang (Yangtze River) Estuary during the summer flood period in 2001. From the results, three sources of suspended matter, riverine, deltaic (salt marshes) and marine (East China Sea - ECS) were distinguished. The resuspended particulate organic matter contents in the water column increased with the amount of total suspended matter (TSM) indicating the role of dispersive and/or turbulent mixing and its control over the high TSM concentration in the Changjiang Estuary. This and an active resuspension/deposition in the estuary determine the nature of organic matter in suspended materials reaching the East China Sea. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：111 / 126
页数：16
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