Effect of submerged macrophytes on metal and metalloid concentrations in sediments and water of the Yunnan Plateau lakes in China
Effect of submerged macrophytes on metal and metalloid concentrations in sediments and water of the Yunnan Plateau lakes in China
复制标题
沉水植物对云南高原湖泊沉积物和水体中金属和类金属浓度的影响
DOI：
10.1007/s11368-017-1731-3
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发表时间：
2017-05
影响因子：
3.6
通讯作者：
Liu Guihua
中科院分区：
文献类型：
--
作者：
Xing Wei;Bai Guoliang;Wu Haoping;Liu Han;Liu Guihua
目的沉水植物具有通过根部从沉积物中吸收金属和类金属的能力，通过叶从水中吸收金属和类金属，或者同时从两者中吸收金属和金属。本研究的目的是(1)检验有沉水植物采样点水体和沉积物中金属和类金属含量显著低于无沉水植物采样点的假设；(2)探讨不同种类沉水植物对金属和类金属的积累潜力；(3)探讨云南高原湖泊沉水植物与水体和沉积物之间的关系。用电感耦合等离子体原子发射光谱仪测定了沉水植物、水体和沉积物中Al、As、Ba、Cd、Co、Cr、Cu、Fe、Li、Mn、Mo、Ni、Pb、Se、Sr和Zn等16种金属和类金属的含量。通过皮尔逊相关分析，研究了水体、沉积物和沉水植物中金属和类金属含量之间的关系。结果和讨论有沉水植物的采样点和无沉水植物采样点的水体和沉积物中的金属和类金属含量没有显著差异。此外，湖水和沉积物主要受到As、Cr、Pb的污染，根据Fe超积累的阈值，小球藻是Fe的超积累者。沉水植物中的金属与类金属之间存在着显著的正相关关系，这是由于它们之间的共同积累。研究发现，云南高原湖泊沉水植物中的铬与水体中的铬呈显著正相关，沉水植物中的砷、镉、铜与相应沉积物中的砷、镉、铜呈显著正相关。结论沉水植物对云南高原20个湖泊沉积物和水体中的金属和类金属含量无显著影响。然而，需要进一步的研究来了解沉水植物、水和沉积物中金属和类金属的相互作用。
PurposeSubmerged macrophytes have an ability to absorb metals and metalloids either from the sediments via the roots, from the water by the leaves, or from both sources. The objectives of this study were (1) to test the hypothesis that metal and metalloid concentrations in water and sediments from sampling sites with submerged macrophytes are significantly lower than those from sampling sites without submerged macrophytes, (2) to explore the accumulation potential for metals and metalloids of different submerged macrophyte species, and (3) to discuss the relationships among submerged macrophytes, water, and sediments in the Yunnan Plateau lakes.Materials and methodsTwenty Yunnan Plateau lakes with different trophic levels were selected. Concentrations of 16 metals and metalloids (Al, As, Ba, Cd, Co, Cr, Cu, Fe, Li, Mn, Mo, Ni, Pb, Se, Sr, and Zn) in submerged macrophytes, water, and sediments were determined by using ICP-AES. Relationships among metal and metalloid concentrations in water, sediments, and submerged macrophytes were carried out by Pearson correlation analysis. The enrichment factor was calculated as the ratio between the concentration of metals and metalloids in a sediment sample and the soil background value.Results and discussionNo significant differences were found in metal and metalloid concentrations in water and sediments between sampling sites with submerged macrophytes and sampling sites without submerged macrophytes. Moreover, lake water and sediments were mainly contaminated by As, Cr, and Pb.Potamogeton distinctusis a hyperaccumulator of Fe according to the threshold value for Fe hyperaccumulation. Many significantly positive correlations were found among metals and metalloids in submerged macrophytes due to co-accumulation. We found significant correlation between Cr in submerged macrophytes and Cr in water, and strong positive correlations between As, Cd, and Cu in submerged macrophytes and As, Cd, and Cu in corresponding sediments in the Yunnan Plateau lakes.ConclusionsSubmerged macrophytes have no significant effects on metal and metalloid concentrations in sediments and water in all the 20 Yunnan Plateau lakes in the study. However, further studies are necessary to understand the interactions of metals and metalloids in submerged macrophytes, water, and sediments.
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影响因子：
2.8
作者：
T. Valente;T. Valente;J. Grande;J. C. Cerón;M. L. Torre;M. Santisteban;J. Borrego;P. Fernández;Daniel Sánchez-Rodas
通讯作者：
T. Valente;T. Valente;J. Grande;J. C. Cerón;M. L. Torre;M. Santisteban;J. Borrego;P. Fernández;Daniel Sánchez-Rodas
DOI：
10.1016/j.plaphy.2010.08.006
发表时间：
2010-10
期刊：
Plant physiology and biochemistry : PPB
影响因子：
--
作者：
W. Xing;D. Li;Guihua Liu
通讯作者：
W. Xing;D. Li;Guihua Liu
中国滇池周边池塘水体、沉积物和沉水植物中的重金属
影响因子：
6.8
作者：
Wang Zhixiu;Yao Lu;Liu Guihua;Liu Wenzhi
通讯作者：
Liu Wenzhi
影响因子：
8.9
作者：
M. Monferrán;M. L. Pignata;D. Wunderlin
通讯作者：
M. Monferrán;M. L. Pignata;D. Wunderlin
影响因子：
3
作者：
P. Rai
通讯作者：
P. Rai