Nutrient fluxes across sediment-water interface in Bohai Bay Coastal Zone, China

被引：46

作者：

Mu, Di ^{[1
,2
]}

Yuan, Dekui ^{[1
]}

Feng, Huan ^{[3
]}

Xing, Fangwei ^{[1
]}

Teo, Fang Yenn ^{[4
]}

Li, Shuangzhao ^{[1
]}

机构：

[1] Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China

[2] Hebei Univ Technol, Sch Marine Sci & Engn, Tianjin 300130, Peoples R China

[3] Montclair State Univ, Dept Earth & Environm Studies, Montclair, NJ 07043 USA

[4] Dept Irrigat & Drainage, Kuala Lumpur 50626, Malaysia

来源：

MARINE POLLUTION BULLETIN | 2017年 / 114卷 / 02期

关键词：

Nutrient flux; Sediment-water interface; Environmental factors; Tianjin Coastal Zone; Bohai Bay; SPATIAL VARIATIONS; BALTIC SEA; PHOSPHORUS; OXYGEN; DIFFUSION; EXCHANGE; RELEASE; INVENTORY; AMMONIUM; LIGHT;

D O I：

10.1016/j.marpolbul.2016.10.056

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Sediment cores and overlying water samples were collected at four sites in Tianjin Coastal Zone, Bohai Bay, to investigate nutrient (N, P and Si) exchanges across the sediment-water interface. The exchange fluxes of each nutrient species were estimated based on the porewater profiles and laboratory incubation experiments. The results showed significant differences between the two methods, which implied that molecular diffusion alone was not the dominant process controlling nutrient exchanges at these sites. The impacts of redox conditions and bioturbation on the nutrient fluxes were confirmed by the laboratory incubation experiments. The results from this study showed that the nutrient fluxes measured directly from the incubation experiment were more reliable than that predicted from the porewater profiles. The possible impacts causing variations in the nutrient fluxes include sewage discharge and land reclamation. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：705 / 714

页数：10

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