Geochemical Characteristics of Pore Water in the Yangtze Estuary and Adjacent Areas
详细信息
- 责任者：Zou Jianjun (Key Laboratory of State Oceanic Administration for Marine Sedimentology and Environmental Geology ; First Institute of Oceanography ; State Oceanic Administration ; Qingdao 266061 ; China) ; Shi Xuefa
- 刊名：Geochimica
- 出版年：2010
- 卷期：39(6)
- 关键词：孔隙水 ; pore water ; 水化学 ; hydrochemistry ; 长江口 ; Yangtze River Mouth
- 页码：p.580-589
- 图表：2 illus., 4 tables, 34 refs.
- 分类号：0200
- issnNo：ISSN0379-1726
- isbnNo：CN44-1398/P
摘要
The major factors that govern the vertical distributions of nutrients and Fe2+, Mn2+ in pore water were studied by analyzing the concentrations of nutrients and Fe, Mn in pore water and overlying water and total organic carbon, total nitrogen, phosphorus, iron, manganese aluminum in sediments in the Yangtze Estuary, combined with early diagenesis model and geochemical thermodynamic analysis. The benthic fluxes of nutrients, Fe and Mn were calculated. The results show that the concentrations of nutrients, Fe, Mn in pore water are much higher than those in overlying water. The interstitial nutrients, iron and manganese are mainly controlled by early diagenetic processes in Yangtze Estuary sediments. The diffusive fluxes can be neglected when the authors consider the source of nutrients required by plankton in the Yangtze Estuary.
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