Analysis on the distribution characteristics and sources of soil heavy metals in suburban farmland in Xiangtan City

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Zhang, Yong^1,2 ; Sun, Xinxin^1

School of Resource, Environmental and Safety Engineering, Hunan University of Science and Technology, Xiangtan, China^1

College of Resources and Environmental Sciences, Hunan Normal University, Changsha, China^2

关键词: Agricultural fields;    Automobile exhaust;    Distribution characteristics;    Heavy metal elements;    Industrial districts;    Landuse classifications;    Pearson correlation analysis;    Soil heavy metals;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/4/042005/pdf
DOI  :  10.1088/1755-1315/108/4/042005

来源: IOP

【 摘 要 】

The rapid development of the economy will inevitably have an impact on the farmland soil environment. The content of heavy metal is increasing day by day, and the heavy metal can enter people's body through different channels and endanger people's health. Based on agricultural land and crop types in accordance with the regional land use classification, using the method of the Single Factor Index and Comprehensive Pollution Index, the pollution status of heavy metals in farmland soil in the suburbs of Xiangtan city was studied and evaluated. At the same time, we use SPSS software to analyze the four heavy metal elements (Cu, Zn, As and Pb) and analyze their possible sources. The results showed that the farmland soils in Erhuan Road and Zhubu Port were polluted, and the farmland soil in Shuangma (an old industrial district) was not polluted; for different crop lands, orchards and vegetable lands were not contaminated, but rape and rice lands were contaminated. Pearson correlation analysis showed that Cu, As and Pb might come from the same pollution source, while Zn might come from other sources. Waste water from a chemical plant, crop types, automobile exhaust and other human factors may be important sources of soil pollution in agricultural fields.