钦州湾表层海水中总溶解态氮磷分布特征及季节变化

doi:10.13634/j.cnki.mes20170305

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摘要 2015~2016年对广西钦州湾进行4个航次的调查，采集海水样品分析该港湾总溶解态氮（total dissolved nitrogen， TDN）、总溶解态磷（total dissolved phosphorus， TDP），以及溶解态有机氮（dissolved organic nitrogen， DON）和溶解有机磷（dissolved organic phosphorus， DOP）一年的浓度分布特征及季节变化。结果表明，2015~2016年间钦州湾海域TDN浓度为9.37~77.52 μmol/L，TDP的浓度为0.20~4.08 μmol/L。受河流径流的影响，钦州湾的TDN和TDP总体上都呈现出从内湾向外湾递减的空间分布特征。DON平均浓度在8月、11月和3月，DOP在8月和3月，都分别高于无机形态的氮、磷。其中，8月份DON和DOP分别占TDN和TDP的72.0%±19.7%和58.4%±20.1%， DON和DOP是钦州湾溶解态氮、磷的重要组成部分，为浮游植物的生长提供营养条件。

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	覃仙玲
	陈宪云
	赖俊翔
	姜发军
	陈波

关键词：钦州湾总溶解态氮总溶解态磷溶解有机氮溶解有机磷

Abstract：Four voyage investigations were done between 2015 and 2016 in order to study the distribution characteristics and seasonal variation total dissolved nitrogen(TDN), total dissolved phosphorus(TDP), dissolved organic nitrogen(DON) and dissolved organic phosphorus(DOP) in Qinzhou bay, Guangxi. It was shown that the TDN concentrations range from 9.37 to 77.52 μmol/L in this water, and TDP concentrations range from 0.20 to 4.08 μmol/L. Influenced by river runoff, the spatial distribution characteristics of TDN and TDP in Qinzhou bay were presented diminishing from inner bay to outer bay. The average concentrations of DON in August, November and March, DOP in August and March were higer than inorganic nitrogen and phosphorus respectively. The average ratio of DON and TDN reached 72.0%±19.7% in August, While DOP/TDP is 58.4%±20.1% in the same month. DON and DOP is an important part of dissolved nitrogen and phosphorus, and they may provide nutrition conditions for the growth of phytoplankton.

Key words： Qinzhou bay TDN TDP DON DOP

收稿日期: 2016-05-23;

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基金资助:

广西科学院基本科研业务费项目（15YJ22HY07）；广西重大基础研究专项（2012GXNSFEA0533001）；国家自然科学基金项目（41506146）

作者简介:覃仙玲(1989-),女,广西贵港人,助理研究员,硕士,主要研究方向为海洋微藻生理生态学,E-mail:048before@163.com

引用本文:

覃仙玲,陈宪云,赖俊翔等. 钦州湾表层海水中总溶解态氮磷分布特征及季节变化[J]. 海洋环境科学, 2017, 36(3): 349-353.

QIN Xian-ling,CHEN Xian-yun,LAI Jun-xiang et al. The distribution characteristics and seasonal variation of total dissolved nitrogen and phosphorus in the surface of Qinzhou bay[J]. Marine Environmental Science, 2017, 36(3): 349-353.

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http://hyhjkx.nmemc.org.cn/CN/10.13634/j.cnki.mes20170305 或 http://hyhjkx.nmemc.org.cn/CN/Y2017/V36/I3/349

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