| 我国典型潮间带沉积物-水界面无机氮源汇效应 |
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| 引用本文： | 聂家琴,王东启,陈杰,李杨杰,陈姝,陈振楼.我国典型潮间带沉积物-水界面无机氮源汇效应[J].环境科学,2018,39(9):4199-4205. |
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| 作者姓名： | 聂家琴 王东启 陈杰 李杨杰 陈姝 陈振楼 |
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| 作者单位： | 华东师范大学地理科学学院;地理信息科学教育部重点实验室;国家海洋局第二海洋研究所 |
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| 基金项目： | 国家自然科学基金项目（41473094，41671467）；科技部科技基础性工作专项（2014FY210600） |
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| 摘 要： | 以中国东部沿海12个典型潮间带为研究对象,通过室内模拟测定了潮间带沉积物-水界面硝酸盐(NO_3~-)和氨氮(NH_4~+)的源汇通量,分析了沉积物对上覆水体无机氮源汇效应的空间分布特征,以及环境因子的影响.结果发现:(1)NO_3~--N的总通量范围是-2.91~3.34 mmol·(m~2·h)~(-1),NH_4~+-N的总通量范围是-4.36~2.34 mmol·(m~2·h)~(-1).12℃和35℃温度下,无机氮的平均值是-0.04 mmol·(m~2·h)~(-1),我国东部典型潮间带沉积物表现为氨氮和硝氮的有效汇库.(2)潮间带的硝氮和氨氮通量存在纬度分异.12℃时,纬度越高,氨氮硝氮通量值越大;25℃和35℃时,潮间带硝氮通量值大小随纬度的变化为,25°~35°N15°~25°N35°~45°N.而氨氮通量值,25°~35°N15°~25°N35°~45°N.(3)温度通过影响硝化反硝化的耦合作用影响无机氮通量.潮间带的NO_3~--N通量随温度的增加而减小,15°~25°N和35°~45°N地区NO_3~--N通量随温度先升高再降低,25°~35°N地区NO_3~--N通量随温度一直减小.每个纬度区,温度越高,NH_4~+-N通量值越低.(4)上覆水体的盐度、沉积物总有机碳(TOC)、总氮(TN)含量,孔隙水氨氮、硝氮浓度,容重等环境因子对通量没有单一的显著影响,协同影响NO_3~--N、NH_4~+-N在潮滩沉积物水界面的空间分异.
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| 关 键 词： | 潮间带 无机氮通量 空间分布 温度 沉积物水界面 |
| 收稿时间： | 2017/12/12 0:00:00 |
| 修稿时间： | 2018/3/13 0:00:00 |
Simulation of Inorganic Nitrogen Fluxes at the Sediment-water Interface in a Typical Intertidal Zone, Eastern China |
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| NIE Jia-qin,WANG Dong-qi,CHEN Jie,LI Yang-jie,CHEN Shu and CHEN Zhen-lou.Simulation of Inorganic Nitrogen Fluxes at the Sediment-water Interface in a Typical Intertidal Zone, Eastern China[J].Chinese Journal of Environmental Science,2018,39(9):4199-4205. |
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| Authors: | NIE Jia-qin WANG Dong-qi CHEN Jie LI Yang-jie CHEN Shu and CHEN Zhen-lou |
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| Institution: | School of Geographic Sciences, East China Normal University, Shanghai 201100, China;Key Laboratory of Geographic Information Science of the Ministry of Education, East China Normal University, Shanghai 201100, China,School of Geographic Sciences, East China Normal University, Shanghai 201100, China;Key Laboratory of Geographic Information Science of the Ministry of Education, East China Normal University, Shanghai 201100, China,School of Geographic Sciences, East China Normal University, Shanghai 201100, China;Key Laboratory of Geographic Information Science of the Ministry of Education, East China Normal University, Shanghai 201100, China,School of Geographic Sciences, East China Normal University, Shanghai 201100, China;Key Laboratory of Geographic Information Science of the Ministry of Education, East China Normal University, Shanghai 201100, China;Second Institude of Oceanography, State Oceanic Administration, Hangzhou 310012, China,School of Geographic Sciences, East China Normal University, Shanghai 201100, China;Key Laboratory of Geographic Information Science of the Ministry of Education, East China Normal University, Shanghai 201100, China and School of Geographic Sciences, East China Normal University, Shanghai 201100, China;Key Laboratory of Geographic Information Science of the Ministry of Education, East China Normal University, Shanghai 201100, China |
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| Abstract: | |
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| Keywords: | intertidal zone dissolved inorganic nitrogen flux spatial distribution temperature sediment-water interface |
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