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武汉月湖近代沉积物中的硅藻组合与环境关系研究
Authors
叶艳婷
吴振斌
+4 more
周巧红
胡胜华
贺锋
高云霓
Publication date
1 January 2011
Publisher
Abstract
采集武汉月湖2处近代沉积物,分析了沉积硅藻组合与其环境关系,共发现24属83种硅藻。结果表明:2个柱状沉积物中硅藻优势属为小环藻属、直链藻属、舟形藻属、Cyclostephanos属。Z-1钻孔共有20属61种硅藻,Z-2钻孔共有24属68种硅藻。Z-1钻孔优势种为梅尼小环藻(Cyclotella meneghiniana)、颗粒直链藻(Aulacoseira granulata)、Navicula porifera、Cyclostephanos tholifomis。Z-2钻孔优势种为梅尼小环藻、颗粒直链藻、舟形藻(Navicula sp.)、Cyclostephanos invisitatus。就硅藻密度分布而言,总趋势上层最多,平均7.14×105~58.65×105 ind.g-1,中层其次,平均0.08×105~13.98×105 ind.g-1,下层最少,平均0.24×105~0.64×105 ind.g-1。硅藻种数最少的样品出现在沉积物中层,梅尼小环藻、颗粒直链藻、舟形藻、Navicula porifera、Cyclostephanos tholifomis、Cyclostephanos invisitatus的组合可以指示湖泊水体环境出现富营养化。通过探讨分析影响硅藻分布的环境因素,为恢复月湖近代水环境演化过程提供了依据
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Institute of Hydrobiology, Chinese Academy Of Sciences
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oai:ir.ihb.ac.cn:342005/16159
Last time updated on 15/03/2018