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首页> 外文期刊>Journal of environmental sciences >Heavy metal contamination and source in arid agricultural soil in central Gansu Province,China
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Heavy metal contamination and source in arid agricultural soil in central Gansu Province,China

机译：甘肃中部干旱农业土壤中的重金属污染及来源

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摘要

Concentrations of copper(Cu),lead(Pb),chromium(Cr),mercury(Hg),and arsenic(As)were measured in arid agricultural and irrigated agricultural soils collected in Daba Village,Shajiawuan Village,Gangou Village and Sifangwu Village,located in central Gansu Province,China.Concentrations except Hg and Pb were lower than the background values in grey calcareous soil in the selected arid agricultural soils.Pb concentration exceeded the threshold of arid agricultural soils in China by 72.46%.These results showed that there was indeed serious pollution with Pb,a slight pollution problem for other selected metals in the irrigated agricultural soils in Daba Village.Principal component analysis(PCA)was used to assess the soil data,applying varimax rotation with Kaiser Normalization.The result showed that the irrigated factor,agricultural factor and anthropogenic factor all contributed to the relations between selected chemical properties.The main factor of accumulation of Cu,Pb,Cr,Hg and As was lithological factor in arid agricultural areas.There is a striking dissimilarity of origin of Cu,Pb,Cr,Hg and As in agricultural soil between the irrigate agriculture and arid agriculture.
机译：在大坝村，沙家湾村，甘沟村和四方屋村的干旱和灌溉农业土壤中测量了铜，铅，铅，铬，汞，汞和砷的浓度。结果表明，在选定的干旱农业土壤中，灰钙质土壤中的Hg和Pb含量均低于本底值.Pb浓度比中国干旱农业土壤阈值高72.46％。铅污染确实很严重，在大坝村灌溉的农业土壤中对其他选定金属也有轻微污染问题。使用主成分分析（PCA）评估土壤数据，并使用Kaiser归一化技术进行最大方差旋转。灌溉因子，农业因子和人为因子均与所选化学性质之间的关系有关。Cu，Pb，Cr，Hg和As积累的主要因素是结石干旱农业地区的农业土壤中Cu，Pb，Cr，Hg和As的来源存在显着差异。

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