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Eutrophication assessment and bioremediation strategy in a marine fish cage culture area in Nansha Bay, China

文献类型： 外文期刊

作者： Jiang, Zeng Jie 1 ; Fang, Jian Guang 1 ; Mao, Yu Ze 1 ; Wang, Wei 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Minist Agr, Key Lab Sustainable Utilizat Marine Fisheries Res, Qingdao 266071, Peoples R China

关键词： phosphate: 14265-44-2;inorganic nitrogen;seasonal variation;eutrophication assessment

期刊名称：JOURNAL OF APPLIED PHYCOLOGY （ 影响因子：3.215； 五年影响因子：3.612 ）

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收录情况： SCI

摘要： On the basis of field data measured during four cruises from January to November 2007, variations in the characteristics of dissolved inorganic nitrogen and phosphate were analyzed in Nansha marine fish cage culture area, Ningbo City, China. Dissolved inorganic nitrogen (DIN) was selected as the parameter to balance seaweed absorption and fish DIN production. The contents of DIN and phosphate varied with different seasons, and eutrophication index (E) value ranged from 2.41 to 15.99, indicating serious eutrophication conditions; the annual average value of N/P of 32.95 indicates a nitrogen surplus in this system. The eutrophication condition in Nansha Bay was mainly caused by the fish cage culture activities. Based on their biological characteristics, Laminaria and Gracilaria were selected as the bioremediation species in winter and spring and summer and autumn, respectively. The optimal co-cultivation proportion of fish cage to Laminaria and Gracilaria in this bay was 1 cage, 450 m(2) and one cage, 690 m(2), respectively.

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