安徽省繁昌县区域土壤重金属污染初步研究

Preliminary Study of Pollution of Heavy Metals in Regional Soil in Fanchang County of Anhui Province

通过对安徽省繁昌县环城、黄浒、荻港、新港、马坝、三山、小洲、新林等８个典型农业区域土壤重金属Ａｓ，Ｈｇ，Ｐｂ，Ｃｄ，Ｚｎ，Ｃｒ污染现状的调查与分析，建立了土壤重金属污染研究的一般程序和方法。在分析各典型调查区域环境背景特征的基础上，计算出各区域土壤重金属污染指数，应用对应分析技术，研究了各调查区土壤重金属的污染特征。结果表明，繁昌县区域土壤重金属污染已比较显著，且各区域间土壤重金属污染具有一定的差异，总体上荻港镇较其他区域污染严重。各区域间Ｃｄ，Ａｓ污染水平差异明显，但Ｈｇ，Ｐｂ，Ｚｎ，Ｃｒ污染差异不大。最后，根据研究结果提出了控制繁昌县区域土壤重金属污染、改善区域土壤环境质量的建议。

Through the investigation and analysis of the pollution of heavy metals such as As,Hg,Pb,Cd,Zn and Cr in the regional soil in the Huancheng,Huanghu,Digang,Xingang,Maba,Sanshan,Xiaozhou, Xinglin eight typical agricultural regions of Fanchang county,Anhui province, the general procedure and method on the research of pollution of heavy metals in the regional soil is established. After analysing the environmental background characteristics of these regions,the pollutant index of heavy metals in the soil in these regions is calculated . On the basis of this, correspondence analysis technique is applied to the correlational analysis on the characteristics of the pollution types in the soil of the investigated regions . The results show that the pollution of heavy metals in the regional soil in the Fanchang county is quite obvious,the pollution shows different characteristics in different regions ; and in general,the pollution of heavy metals in the soil is more serious in Digang area than in the other regions. The pollution differences about Hg,Pb,Zn and Cr are not outstanding among these regions but difference of the Cd and As is quite obvious. In accordance with the current situation, some suggestions for controlling pollution of heavy metals in the soil and for improving the soil environmental quality in these regions are given.