| 闽江口海域氮磷营养盐含量的变化及富营养化特征 |
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| 引用本文： | 郑小宏.闽江口海域氮磷营养盐含量的变化及富营养化特征[J].台湾海峡,2010,29(1):42-46. |
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| 作者姓名： | 郑小宏 |
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| 作者单位： | 福州市海洋与渔业技术中心,福建,福州,350026 |
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| 摘 要： | 根据2007—2008年眷、夏、秋、冬8个航次的调查数据，对闽江口海域N、P营养盐分布状况与富营养化特征进行了研究．其结果表明，受闽江冲淡水影响，海水中的N、P营养盐含量的平面分布呈现近岸高而向外逐渐降低的趋势．在N、P营养盐中，PO4-P含量呈现较为明显的季节性变化，而DIN含量的季节性变化规律却不明显．在春、夏、秋、冬四季中NO3-N／DIN含量的比值分别高达79．60％、79．13％、90．54％、96．14％，主导该海域DIN含量的平面分布和污染程度．闽江口海域海水中DIN、PO4-P含量呈不同程度的超标状态，富营养化指数为0．17—41．73，N／P原子比均值为41．14，远远偏离Redfield值（16：1），具有磷限制潜在性富营养化特征．
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| 关 键 词： | 海洋化学 营养盐 潜在性富营养化 闽江口海域 |
Changes in nitrogen and phosphate and eutrophication character in Minjiang Estuary |
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| ZHENG Xiao-hong.Changes in nitrogen and phosphate and eutrophication character in Minjiang Estuary[J].Journal of Oceanography In Taiwan Strait,2010,29(1):42-46. |
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| Authors: | ZHENG Xiao-hong |
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| Institution: | ZHENG Xiao-hong(Fuzhou Marine , Fisheries Technology Center,Fuzhou 350026,China) |
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| Abstract: | Based on data from seasonal surveys in 2007 and 2008,the nitrogen and phosphate distribution and the eutrophication of Minjiang Estuary are studied.It shows that N and P values in the seawater were higher alongshore and decreased gradually outward due to mostly the impact of freshwater from Minjiang River.Among them PO4-P varied much in 4 seasons in contrast to DIN which showed less variation.NO3-N ratios were as high as 79.60%,79.13%,90.54%,96.14% in all year,dominating the horizontal distribution of DIN a... |
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| Keywords: | marine chemistry nutrients potential eutrophication Minjiang Estuary |
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