引用本文:刘培芳,陈振楼,刘 杰,许世远,张 菊,等.环境因子对长江口潮滩沉积物中NH+4的释放影响[J].环境科学研究,2002,15(5):28-32.
LIU Pei-fang,CHEN Zhen-lou,LIU Jie,XU Shi-yuan,ZHANG Ju,et al.Effects of Environmental Factors on NH4<\sub>+<\sup> Release in Tidal Flat Sediments Along the Yangtze Delta[J].Reserrch of Environmental Science,2002,15(5):28-32.]
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环境因子对长江口潮滩沉积物中NH+4的释放影响
刘培芳,陈振楼,刘 杰,许世远,张 菊,等
作者单位
刘培芳 华东师范大学,资源与环境科学学院,地理系,上海,200062 
陈振楼 华东师范大学,资源与环境科学学院,地理系,上海,200062 
刘 杰 华东师范大学,资源与环境科学学院,地理系,上海,200062 
许世远 华东师范大学,资源与环境科学学院,地理系,上海,200062 
张 菊 华东师范大学,资源与环境科学学院,地理系,上海,200062 
摘要:
以长江口潮滩沉积物湿样进行模拟实验,研究盐度、pH和温度等环境因子对沉积物中NH4<\sub>+<\sup>释放的影响.结果表明,随着盐度和温度的上升,沉积物中NH4<\sub>+<\sup>释放量都显著增加;由于潮滩沉积物缓冲性能较好,pH的影响不太明显.此外,NH4<\sub>+<\sup>的释放与沉积物类型有关,沙性物质含量高的低潮滩沉积物NH4<\sub>+<\sup>的释放量明显低于沙性物质低的高、中潮滩沉积物.
关键词:  长江口  潮滩沉积物  盐度  pH  温度  NH4+  释放
DOI:
分类号:
基金项目:国家自然科学基金资助项目(40173030);国家自然科学基金重点项目(40131020);国家教育部骨干教师计划资助项目;上海市青年科技启明星跟踪计划项目(01QMH1406)
Effects of Environmental Factors on NH4<\sub>+<\sup> Release in Tidal Flat Sediments Along the Yangtze Delta
LIU Pei-fang,CHEN Zhen-lou,LIU Jie,XU Shi-yuan,ZHANG Ju,et al
Abstract:
The regulatory effects of salinity,pH and temperature on NH4<\sub>+<\sup> dynamics in tidal flat sediments were investigated along the Yangtze delta,using sediment slurries.It was shown that when salinity and temperature were increased,all curves of NH4<\sub>+<\sup> released from sediments increased with similar trends.However,the effects of pH on NH4<\sub>+<\sup> released from sediments were unclear.In addition,the type of sediment affected the magnitude of release of NH4<\sub>+<\sup>,resulted in the fact that its magnitude was always lower in the low flat with high-content sands than that in the high and middle flats with low-content sands.
Key words:  Yangtze Estuary  tidal flat sediments  salinity  pH  temperature  NH4<\sub>+<\sup>  release