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首页> 外文会议>International Congress and Exhibition on Arsenic in the Environment >The influence of irrigation-induced water table fluctuation on iron redistribution and arsenic fate in unsaturated zone
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The influence of irrigation-induced water table fluctuation on iron redistribution and arsenic fate in unsaturated zone

机译：灌溉诱导的水位波动对不饱和区铁再分分配和砷命运的影响

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Using high arsenic (As) groundwater as the main source of irrigation water is a common practice in vast rural regions due to the water resource shortage of surface water.This study aims to describes the As and Fe redistribution during irrigation and consequent water table fluctuation through column experiment.Results clearly demonstrate the oxygen exchange between atmosphere and column pore during both water table decrease and recovery.The exchanged oxygen has resulted in the As and Fe redistribution.Moreover,the fixed As and and were accumulated mostly on the top of the column during percolation.However,topsoil is precisely the site where nutrients come from for crops.As a result,As uptake by crops from soil may continually occur.Thus,it is of great significance for food security to reduce the agricultural use of high-As groundwater.
机译：使用高砷（AS）地下水作为灌溉水的主要来源是由于地表水的水资源短缺导致的巨大农村地区的常见实践。本研究旨在描述灌溉过程中的AS和FE再分配和通过的水表波动柱实验。结果清楚地证明了在水表下减少和回收过程中大气和柱孔之间的氧气交换。交换氧导致了AS和Fe Receastribution.more，固定的，并且主要积聚在柱的顶部然而，在渗透期间。无论何种形势，表都是营养素来自农作物的遗址。结果是，由于土壤中的作物的摄取可能不断发生。因此，粮食安全对降低高等的农业使用具有重要意义地下水。

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