Heavy metal concentrations in a soil-plant-snail food chain along a terrestrial soil pollution gradient.
Heavy metal concentrations in a soil-plant-snail food chain along a terrestrial soil pollution gradient.
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DOI：
10.1016/j.envpol.2005.01.011
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发表时间：
2005-11
影响因子：
8.9
通讯作者：
Martje J. M. Notten;A. Oosthoek;J. Rozema;Rien Aerts
中科院分区：
文献类型：
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作者：
Martje J. M. Notten;A. Oosthoek;J. Rozema;Rien Aerts
研究人员在荷兰Biesbosch洪泛平原的4个污染地点和2个参考地点调查了土壤-植物（紫花苜蓿）-蜗牛（麻蚶）食物链中Zn、Cu、Cd和Pb的浓度。污染地点的土壤金属总浓度是对照地点的4 ~ 20倍。只有Zn的叶片浓度与土壤浓度呈正相关（r2=0.20）。在蜗牛组织中观察到锌、铜和镉的生物积累。我们发现蜗牛和叶片中所有金属的浓度呈正相关（r2= 0.19-0.46）。除Cu外，土壤与钉螺浓度呈显著正相关（r2=0.15 ~ 0.33）。这些结果表明金属从菊苣叶片和土壤中转移到线虫螺。金属从被污染的叶片向线虫的转移比从土壤的转移更重要。
We investigated concentrations of Zn, Cu, Cd and Pb in the compartments of a soil-plant (Urtica dioica)-snail (Cepaea nemoralis) food chain in four polluted locations in the Biesbosch floodplains, the Netherlands, and two reference locations. Total soil metal concentrations in the polluted locations were 4–20 times higher than those in the reference locations. Positive relationships between the generally low leaf concentrations and the soil concentrations were found for Zn only (r2=0.20). Bioaccumulation of Zn, Cu and Cd was observed in the snail tissues. We found positive relationships between the snail and leaf concentrations for all metals (range r2=0.19–0.46). The relationships between soil and snail concentrations were also positive, except for Cu (range r2=0.15–0.33). These results suggest transfer of metals to C. nemoralis snails from U. dioica leaves and from the soil. Metal transfer from polluted leaves to C. nemoralis is more important than transfer from the soil.