基于GIS的地下水质疏水性污染地理空间分布研究

Research on Geospatial Distribution of Hydrophobic Pollution in Groundwater Based on GIS

地下水质疏水性污染涉及多种污染物,如重金属、有机物和微生物等,其迁移、转化和积累过程具有复杂性和多样性。为了制定地下水治理策略,提出基于GIS的地下水质疏水性污染地理空间分布研究方法。介绍研究区域以及土壤和地下水的采样测定方法;建立疏水性污染物的迁移模型,获得水性污染特征,并采用GIS技术绘制疏水性污染元素的地理空间分布图;结合单因子污染指数与潜在生态风险指数分析风险分布特征,完成污染地理空间分布研究。结果表明,研究区域内富集了多种疏水性重金属,主要以Zn和Cu为主,疏水性污染重金属的空间分布较为相似。

The hydrophobic pollution of groundwater involves a variety of pollutants,such as heavy metals,organic matter,and microorganisms,whose migration,transformation,and accumulation processes are complex and diverse.In order to formulate groundwater management strategies,a GIS based method of geospatial distribution of hydrophobic pollution of groundwater quality was proposed.The sampling and measurement methods of soil and groundwater in the study area are introduced.The migration model of hydrophobic pollutants was established.The characteristics of hydrophobic pollution were obtained,and the geographic spatial distribution map of hydrophobic pollution elements was drawn by GIS technology.Combined with single factor pollution index and potential ecological risk index,the risk distribution characteristics were analyzed,and the geographical spatial distribution of pollution was studied.The results showed that a variety of hydrophobic heavy metals were enriched in the study area,mainly Zn and Cu,and the spatial distribution of hydrophobic heavy metals was similar.