| 环境因子对长江口潮滩沉积物中NH+4的释放影响 |
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| 引用本文： | 刘培芳,陈振楼,刘 杰,许世远,张 菊.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. |
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| 作者姓名： | 刘培芳 陈振楼 刘 杰 许世远 张 菊 |
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| 作者单位： | 华东师范大学,资源与环境科学学院,地理系,上海,200062 |
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| 基金项目： | 国家自然科学基金资助项目 ( 40 1730 30 )，国家自然科学基金重点项目 ( 40 1310 2 0 )，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( 0 1QMH14 0 6 ) |
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| 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+释放的影响.结果表明,随着盐度和温度的上升,沉积物中NH4+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+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+的释放量明显低于沙性物质低的高、中潮滩沉积物.
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| 关 键 词： | 长江口 潮滩沉积物 盐度 pH 温度 NH4+ 释放 |
| 文章编号： | 1001-6929(2002)05-0028-05 |
| 收稿时间： | 2001/12/26 0:00:00 |
Effects of Environmental Factors on NH4<\sub>+<\sup> Release in Tidal Flat Sediments Along the Yangtze Delta |
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| LIU Pei-fang,CHEN Zhen-lou,LIU Jie,XU Shi-yuan and ZHANG Ju.Effects of Environmental Factors on NH4<\sub>+<\sup> Release in Tidal Flat Sediments Along the Yangtze Delta[J].Research of Environmental Sciences,2002,15(5):28-32. |
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| Authors: | LIU Pei-fang CHEN Zhen-lou LIU Jie XU Shi-yuan and ZHANG Ju |
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| Institution: | Department of Geography,College of Resource and Environment,East China Normal University,Shanghai 200062,China |
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| Abstract: | The regulatory effects of salinity,pH and temperature on NH\-4\++ 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 NH\-4\++ released from sediments increased with similar trends.However,the effects of pH on NH\-4\++ released from sediments were unclear.In addition,the type of sediment affected the magnitude of release of NH\-4\++,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. |
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| Keywords: | Yangtze Estuary tidal flat sediments salinity pH temperature NH\-4\++ release |
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