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首页> 外文会议>Biogeochemistry of Trace Elements >Dynamic of arsenic present in naturally enriched soil: focus on plant transfer and earthworm's impact
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Dynamic of arsenic present in naturally enriched soil: focus on plant transfer and earthworm's impact

机译：天然浓浓的土壤中存在的砷的动态：专注于植物转移和蚯蚓的影响

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We proposed here to investigate a naturally arsenic (As) enriched soil using laboratory experiments (rhizoboxes and microcosms). After a characterisation of the arsenic repartition in soil using sequential extractions, the study focused on As transfer in two plants: a fern (Pteris vittata) L. and a tomato species (Lycospersicon esculenturn Mill.). Phosphate addition was also tested in order to highlight a potential risk linked to the use of fertilizers. The second part of the study investigates As dynamics: earthworms by their bburrowing and casting activiies were assumed to influence As availability. Indeed, earthworms may induce a modification of As speciation in the systern Main results show a significant As accumulation in the plants studied as well as a clear influence of phosphate addition. Nevertheless, impact of earthworm bioturbation on As moility seems to be quite limited.
机译：我们提出的是使用实验室实验（Rhizoboxes和Microcosms）来研究天然砷（AS）富集的土壤。在使用顺序提取的土壤中砷重置的表征之后，研究重点是两种植物的转移：蕨（Pteris Vittata）L.和番茄物种（Lycospersicon Esculenturn Mill。）。还测试了磷酸盐添加，以突出与使用肥料的潜在风险。该研究的第二部分调查了动态：假设其造型和铸造活动的蚯蚓受到影响。实际上，蚯蚓可以诱导在发证人的主要结果中的形态诱导修饰，显示出在植物中的积累以及磷酸盐添加的明显影响。然而，蚯蚓生物扰动对Moily的影响似乎非常有限。

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