| 长江口北支水域营养盐的季节性变化 |
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| 引用本文： | 吴双,;边佳胤,;吴惠仙,;薛俊增. 长江口北支水域营养盐的季节性变化[J]. 生物学杂志, 2014, 0(3): 25-28 |
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| 作者姓名： | 吴双, 边佳胤, 吴惠仙, 薛俊增 |
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| 作者单位： | [1]上海海洋大学水产种质资源发掘与利用教育部重点实验室,上海201306; [2]国家海洋局舟山海洋工作站,舟山316000 |
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| 基金项目： | 海洋公益性行业科研专项（201005013）; 上海市科委海洋科技专项（11dz1205000）; 上海市教委重点学科建设项目（J50701） |
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| 摘 要： | 于2010年12月—2011年9月,2012年9月—2013年6月按季度采样对长江口北支水域氮、磷营养盐的季度变化规律、形态组成以及环境因子间相互关系进行了分析。结果显示溶解性无机氮存在形态主要是硝酸盐,占90%以上,浓度变化规律为夏秋高于春冬两季;溶解性无机氮、总氮峰值分别为3.99 mg/L及1.70 mg/L,均出现在2011年夏季,该现象与当年洪期长江流域连日降雨有关。长江径流所携带营养盐是导致北支无机氮、总磷浓度变化的主要原因。对理化因子进行相关性分析表明,盐度、pH值是营养盐最主要的限制因子。
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| 关 键 词： | 长江口 营养盐 季节变化 |
Seasonal variation of nutrients in the north branch of the Yangtze River estuary |
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| Affiliation: | WU Shuang,BIAN Jia-yin,WU Hui-xian,XUE Jun-zeng ( 1. Key Laboratory of Exploration and Utilization of Aquatic Resource, Ministry of Education, Shanghai Ocean University, Shanghai 201306 ; 2. Zhoushan Workstation of the National Maritime Bureau, Zhoushan 316000, China) |
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| Abstract: | During the sampling period from Dec. 2010 to Sep. 2011 and Sep. 2012- Jun. 2013,the seasonal variation,morphological composition of nitrogen and phosphorus were analyzed,and relationship between environmental factors was studied,respectively.Results indicated that the main presence of DIN was nitrates,which accounted for more than 90% in all seasons,its concentration in summer /autumn was higher than that in spring /winter. The concentration peaks of DIN and TP were 3. 99 mg /L and 1. 70 mg /L,respectively,appeared in summer of 2011 during the flood period. |
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| Keywords: | Yangtze River estuary nutrients seasonal variation |
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