徐州城市土壤重金属污染空间分布研究

Study on Spatial Distribution of Contamination of Heavy Metals in Xuzhou City Soils

城市土壤作为城市环境中重金属的主要蓄积库,反映了城市环境受重金属污染状况。随着城市发展,环境压力增大,加强对城市土壤中重金属污染研究具有迫切性和重要性。为此,在土壤采样点数据基础上,利用GIS技术,对徐州市土壤重金属来源与空间分布关系进行了研究。研究结果表明:徐州城市土壤的重金属主要来源可以分为交通污染源、燃煤污染源和土壤母质,且分布明显地与产业活动呈一致性。

As the primary container of heavy metals in urban environment,urban soils can reflect the status of contamination of heavy metals in urban. It is important and urgent that strengthen the study on contamination of heavy metals in urban soils along with development of cities and increase of environmental pressures.Based on data of soil samples and supported by GIS technologies,this paper has discussed the relationship between origin of heavy metals in soils and spatial distribution in Xuzhou city.The result indicated that the origin of heavy metals in urban soils in Xuzhou city could divided into three parts.They are from communication,from burning coal and from parent material of siols.Moreover,their distributions are identical to the industrial activities.