Analysis on the Change of Nitrogen, Phosphorus Nutrients and COD Concentrations in the Changjiang (Yangtze River) Estuary and in the Adjacent East China Sea

文献类型： 外文期刊

第一作者： Yin, Y. E.

作者： Yin, Y. E.;Ping, X. Y.;Wang, Y. L.

作者机构：

关键词： Changjiang Estuary and the adjacent East China Sea;eutrophication;methods of analysis and estimation;spatio-temporal distribution

期刊名称：INTERNATIONAL CONFERENCE ON COMPUTER SCIENCE AND ENVIRONMENTAL ENGINEERING (CSEE 2015)

ISSN：

年卷期： 2015 年

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收录情况： SCI

摘要： Eutrophication had become increasingly serious and noxious algal blooms, which had been more frequent occurrence in the Changjiang Estuary and in the adjacent East China Sea. In spring and summer 2007 similar to 2011, six comprehensive investigations were undertaken in three zones (Changjiang Estuary, Hangzhou Bay and Zhoushan fishing ground). From 2007 to 2011, two cruises were undertaken in three zones in the estuary and in the adjacent sea to investigate nitrate (NO3-N), ammonium (NH4-N), nitrite (NO2-N), dissolved inorganic phosphorus (DIP), chemical oxygen demand (COD). The highest concentrations of DIN (NO3-N+ NH4-N+NO2-N), DIP and COD were 2.614 mg.L-1 in spring, 0.140 mg.L-1 in summer and 3.18 mg.L in summer, respectively. DIN and DIP concentrations in summer were a slight higher than in spring. DIN concentrations increased from 2007 to 2011. DIP concentrations were about 0.005-0.140 mg.L-1 from 2007 to 2011 in three zones. COD concentrations were no obvious difference with spring and summer. COD concentrations were about 0.32-3.18 mg.L-1.

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