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北太湖水体固氮作用及其影响因子

张波 赵中华 申秋实 张路

张波, 赵中华, 申秋实, 张路. 北太湖水体固氮作用及其影响因子[J]. 环境工程, 2020, 38(6): 121-125. doi: 10.13205/j.hjgc.202006019
引用本文: 张波, 赵中华, 申秋实, 张路. 北太湖水体固氮作用及其影响因子[J]. 环境工程, 2020, 38(6): 121-125. doi: 10.13205/j.hjgc.202006019
ZHANG Bo, ZHAO Zhong-hua, SHEN Qiu-shi, ZHANG Lu. NITROGEN FIXATION OF WATER COLUMN IN NORTH TAIHU LAKE AND ITS INFLUENCING FACTORS FACTORS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 121-125. doi: 10.13205/j.hjgc.202006019
Citation: ZHANG Bo, ZHAO Zhong-hua, SHEN Qiu-shi, ZHANG Lu. NITROGEN FIXATION OF WATER COLUMN IN NORTH TAIHU LAKE AND ITS INFLUENCING FACTORS FACTORS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 121-125. doi: 10.13205/j.hjgc.202006019

北太湖水体固氮作用及其影响因子

doi: 10.13205/j.hjgc.202006019
详细信息
    作者简介:

    张波(1986-),女,硕士研究生,主要研究方向为湖泊生物与生态。szzhangbo123@163.com

    通讯作者:

    张路(1975-),男,博士,教授,主要研究方向为湖泊环境化学。luzhang@niglas.ac.cn

NITROGEN FIXATION OF WATER COLUMN IN NORTH TAIHU LAKE AND ITS INFLUENCING FACTORS FACTORS

  • 摘要: 为探究北太湖固氮作用,使用乙炔还原法对其水体的原位固氮作用和室内的N、Fe和Mo对鱼腥藻固氮速率的影响进行研究。结果发现:北太湖的年均固氮速率为3.08 ng/(L·h),并表现出明显的时空变化特征,梅梁湾水区的速率最高(2.75 ng/(L·h)),湖心区速率最低(1.38 ng/(L·h));固氮速率在夏季最高[6.03 ng/(L·h)],春[1.08 ng/(L·h)]、秋[0.81 ng/(L·h)]次之,冬季最低[6.97×10-5 ng/(L·h)]。进行相关分析发现:鱼腥藻的生长不受N、Fe和Mo影响(P>0.05);但N是控制鱼腥藻固氮速率的主要因素(P<0.01),而Fe和Mo含量对鱼腥藻的固氮作用并不产生显著影响(P>0.05)。北太湖水体的原位水温(P<0.01)、DTN(P<0.01)、蓝藻生物量和NO3-(P<0.05)是导致水体原位固氮速率时空差异的主要原因。
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  • 收稿日期:  2019-05-22

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