湄洲湾海水硝化作用研究—15N-NH4+氧化法

福建水产 ›› 2013, Vol. 35 ›› Issue (5): 349-354.DOI:

湄洲湾海水硝化作用研究—¹⁵N-NH₄⁺氧化法

郑盛华¹,蔡真珍²,王宪³,钟硕良¹,罗冬莲¹,杨妙峰¹,姜双城¹

1. 福建省水产研究所
2. 厦门海洋职业技术学院
3. 厦门大学

收稿日期:2013-10-09 修回日期:2013-10-10 出版日期:2013-10-25 发布日期:2013-10-25
通讯作者: 郑盛华
基金资助:
福建省专项基金;福建省自然科学基金

Research of nitrification in coastal water of Meizhou Bay[15N]ammonium oxidation method

Received:2013-10-09 Revised:2013-10-10 Online:2013-10-25 Published:2013-10-25

摘要/Abstract

摘要：

本文利用¹⁵N-NH₄⁺氧化法对湄洲湾近岸水体的硝化作用进行深入研究。结果表明，湄洲湾近岸水体硝化速率范围在0.51 μmol.L-1.d-1~4.60 μmol.L-1.d-1。养殖区附近较高的硝化速率，有利于海水对NH₄-N染污物的自净机制，当水体硝化作用强烈时，水中的NO₃^-的浓度也随之升高，表明海水中NO₃^-主要来自于细菌的硝化作用。湄洲湾海水NH₄-N的周转时间在1 d~9 d，表层水体的NH₄-N转化时间高于底层水。硝化作用转化NH4+为NO2-，并最终转化为NO3-，减少了NH₃-N及NH₄-N对近岸养殖系统中生物的危害。

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关键词: 硝化作用, 15N-NH4+氧化法, 湄洲湾

Abstract:

These studies were conducted to estimate nitrification in coastal water of Meizhou Bay by [15N] ammonium oxidation method. The nitrification rate of 0.51μmol?L-1?d-1~4.60 μmol?L-1?d-1 were recorded, and the higher nitrification rate in water close to aquaculture area were propitious to ammonium self-purification. Higher nitrification rate was observed at high NO3- concentration water column, which showed NO3- produced mostly from nitrification. The biological turnover times for NH4+ were short (1d~9 d) in coastal water of Meizhou Bay with the longer turnover times in surface seawater. Nitrification transformed NH4+ to NO2-, final to NO3-, reducing the harm to organisms of coastal aquaculture system resulted from NH3-N and NH4-N.

Key words: nitrification, [15N] ammonium oxidation method, Meizhou Bay

郑盛华蔡真珍王宪钟硕良罗冬莲杨妙峰姜双城. 湄洲湾海水硝化作用研究—¹⁵N-NH₄⁺氧化法[J]. 福建水产, 2013, 35(5): 349-354.

湄洲湾海水硝化作用研究—¹⁵N-NH₄⁺氧化法

Research of nitrification in coastal water of Meizhou Bay[15N]ammonium oxidation method

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