Spatiotemporal evolution of nutrients and the influencing factors in Laizhou Bay over the past 40 years
文献类型： 外文期刊
作者： Zhang, Meng 1 ; Lu, Qingyuan 1 ; Wang, Dawei 1 ; Ding, Dongsheng 1 ; Cui, Zhengguo 1 ; Shi, Honghua 2 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Marine Fisheries, Minist Agr & Rural Affairs, Qingdao 266071, Peoples R China
2.Minist Nat Resources, Inst Oceanog 1, Qingdao 266061, Peoples R China
3.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China
4.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao 266237, Peoples R China
关键词： Nutrients; Eutrophication; Seasonal variation; Spatiotemporal distribution; Laizhou Bay
期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：5.8； 五年影响因子：6.5 ）
ISSN： 0025-326X
年卷期： 2022 年 184 卷
页码：
收录情况： SCI
摘要： The nutrient status in Laizhou Bay has changed in composition and structure as a result of anthropogenic activities and climate change, which has led to several environmental problems (e.g., eutrophication, organic pollution and red tides). To better understand the spatiotemporal variations in dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP), and eutrophication in the Laizhou Bay, we collected historical research data and conducted four cruises in 2021. The highest surface DIN was found to occur in autumn and predominantly concentrated in the southwestern bay. The highest surface DIP content was found in winter and distributed in the northwestern bay. Surface organic pollution showed estuaries as the most polluted areas. In the past 40-60 years, the DIN, DIP, and eutrophication have shown an inverted U-shaped trend, and the bay has changed from N limitation to P limitation. Economic development, phytoplankton absorption, and bottom mineral release are factors influencing the content and distribution of nutrient in the bay.
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