Metal accumulation by submerged macrophytes in eutrophic lakes at the watershed scale
Metal accumulation by submerged macrophytes in eutrophic lakes at the watershed scale
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流域尺度富营养化湖泊沉水植物的金属积累
DOI：
10.1007/s11356-013-1854-z
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发表时间：
2013-06
影响因子：
5.8
通讯作者：
Xing Wei, Haoping Wu, Beibei Hao, Guihua Liu*
中科院分区：
文献类型：
--
作者：
Xing Wei, Haoping Wu, Beibei Hao, Guihua Liu*
对长江中下游沿着24个富营养化湖泊的沉水植物及其相应水体和沉积物中Al、Ba、Ca、K、Li、Mg、Na、Se、Sr和Ti的含量进行了研究。结果表明，由于人类活动的影响，这些富营养化湖泊水体和沉积物中的金属含量都很高。富营养化湖泊沉水植物组织中Al和Na的平均浓度很高。金鱼藻和Najas marina对Ba、Ca、K、Mg、Na、Sr和Ti等金属元素的富集量较大。沉水植物组织中的金属浓度之间存在很强的正相关性，这可能是因为金属的共同积累。沉水植物组织中Li、Mg、Na和Sr的含量与其相应的含水量呈显著相关，但与沉积物值无关。
Metal concentrations (Al, Ba, Ca, K, Li, Mg, Na, Se, Sr and Ti) in submerged macrophytes and corresponding water and sediments were studied in 24 eutrophic lakes along the middle and lower reaches of the Yangtze River (China). Results showed that these eutrophic lakes have high metal concentrations in both water and sediments because of human activities. Average concentrations of Al and Na in tissues of submerged macrophytes were very high in sampled eutrophic lakes. By comparison,Ceratophyllum demersumandNajas marinaaccumulated more metals (e.g. Ba, Ca, K, Mg, Na, Sr and Ti). Strong positive correlations were found between metal concentrations in tissues of submerged macrophytes, probably because of co-accumulation of metals. The concentrations of Li, Mg, Na and Sr in tissues of submerged macrophytes significantly correlated with their corresponding water values, but not sediment values.
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影响因子：
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作者：
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