城市土壤中有机和无机组分相关性研究初探

Preliminary Study on the Correlation of Organic and Inorganic Pollution in Urban Soils

以我国东部某城市城区表层土壤环境指标为研究对象,采用一元线性回归和主成分分析的方法研究了城市土壤中六六六(HCHs)、滴滴涕(DDTs)、多环芳烃(PAHs)、有机质含量,含水量,重金属含量,土壤pH值等指标间的相关性,确认长期的工业活动是导致土壤重金属和多环芳烃污染的主要来源,城市绿地施用农药是土壤六六六和滴滴涕污染的主要来源。

The topsoil samples in some urban areas were collected and analyzed for urban soil pollution investiga- tion. The unitary linearity regression （ULR） and Principal Component Analysis （PCA） methods were used to study the correlations of some parameters such as HCHs, DDTs, PAHs, organic matters, water-content, heavy metals and pH in the urban soils. The results indicate that the long-term industrial activity is the major source of heavy metal and PAHs pollution in urban soils. And HCHs and DDTs pollution result manily from plenty of pesti-cides used in the city greenhelt.