Field controlled experiments of mercury accumulation in crops from air and soil
Field controlled experiments of mercury accumulation in crops from air and soil
复制标题
空气和土壤中农作物汞积累的现场控制实验
DOI：
10.1016/j.envpol.2011.05.029
复制
发表时间：
2011-10-01
影响因子：
8.9
通讯作者：
Ci, Zhijia
中科院分区：
文献类型：
--
作者：
Niu, Zhenchuan;Zhang, Xiaoshan;Ci, Zhijia
采用田间开顶室（OTCs）和土壤汞富集试验，研究了空气和土壤中汞浓度对玉米（Zea mays L.）和小麦（Triticum aestivum L.）器官中汞积累的影响。结果表明，作物叶片中汞含量与空气中汞含量呈显著相关（p < 0.05），与土壤中汞含量呈不显著相关（p < 0.05），表明作物叶片中汞主要来源于空气。根系中汞含量与土壤中汞含量呈显著相关（p < 0.05），与空气中汞含量呈不显著相关（p < 0.05），说明作物根系中汞主要来源于土壤。茎部汞含量与空气、土壤中汞含量无显著相关。然而，茎上汞浓度通常高于茎下汞浓度，表明空气汞对茎中汞积累的影响可能强于土壤汞。(C) 2011 Elsevier Ltd.版权所有。
Field open top chambers (OTCs) and soil mercury (Hg) enriched experiments were employed to study the influence of Hg concentrations in air and soil on the Hg accumulation in the organs of maize (Zea mays L.) and wheat (Triticum aestivum L). Results showed that Hg concentrations in foliages were correlated significantly (p < 0.05) with air Hg concentrations but insignificantly correlated with soil Hg concentrations, indicating that Hg in crop foliages was mainly from air. Hg concentrations in roots were generally correlated with soil Hg concentrations (p < 0.05) but insignificantly correlated with air Hg concentrations, indicating that Hg in crop roots was mainly from soil. No significant correlations were found between Hg concentrations in stems and those in air and soil. However, Hg concentrations in upper stems were usually higher than those in bottom stems, implying air Hg might have stronger influence than soil Hg on stem Hg accumulation. (C) 2011 Elsevier Ltd. All rights reserved.