Nutrient distribution and structure affect the acidification of eutrophic ocean margins: A case study in southwestern coast of the Laizhou Bay, China

MARINE POLLUTION BULLETIN

卷:111

Article

Zhang, Jinfeng^1,2  Gao, Xuelu¹ 

[1] Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China

[2] Ludong Univ, Coll Chem & Mat Sci, Yantai 264001, Shandong, Peoples R China

关键词: Nutrients;    Ocean acidification;    Coastal waters;    Eutrophication;   

DOI  :  10.1016/j.marpolbul.2016.06.095

来源: Elsevier

【 摘 要 】

The effects of nutrient distribution and structure on the acidity of coastal waters were analyzed based on the data of 48 surface water samples collected in the southwestern coast of the Laizhou Bay and its adjacent rivers (SWIZB) which are heavily influenced by nutrient-laden discharges. The concentration and structure of nutrients varied considerably along the coast owing to different contributors. The studied inshore waters exhibited a sign of acidification. The pH was significantly negatively correlated with the concentration of NO3-N, NO2-N, NH4-N and DSi, but showed no obvious correlation with the concentration of PO4-P and the ratio of TDN/IDP, DSi/DIN and DSi/PO4-P, respectively. The results indicated that the distribution of nutrients might well be an important environmental factor affecting the acidification of the SWLZB in warmer months. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

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