萍乡市农用土壤重金属含量及其分布特征分析

Concentration and Spatial Distribution of Heavy Metals in Agricultural Soils of Pingxiang City

以江西省萍乡地区农用土壤为研究对象,分析研究了萍乡市农用土壤中重金属的含量、分布特征。结果表明:萍乡地区农用土壤中重金属的平均含量均未超过国家土壤环境质量二级标准,但其中锌、镍、铬、铜、镉、砷、铅、锰、汞的含量均超过了江西省土壤重金属相应元素的背景值。从空间分布来看,在全市5个县区布置的29个测点中,有14个测点的重金属含量超标;其中上栗县有8个测点超标,明显多于其他县区,出现了不同的污染特征。

The concentration and spatial distribution of heavy metals in agricultural soils of Ping-xiang were the research object. The results showed that the average concentration of heavy metals had not exceeded the national secondary level of soil environmental quality standards. But the concentration of Zn、 Ni、 Cr、 Cu、 Cd、 As、 Pb、 Mn、 Hg had exceeded the background level of soil in Jiangxi. From the spatial distribution, the pollution level of agricultural soil in Shangli was worse than the other areas, the average concentration of heavy metals had exceeded the secondary level of soil environmental quality standards in 14 points, and there are 8 points in Shangli, more than other counties.