Conclusion
In this study, soil Hg had the highest pollution risk.Multivariate statistics
and geostatistics successfully separated metals Cr, Cu, Ni, Hg, Pb
and Zn from elements As andMn. The former were primarily influenced
by various human activities, while the latter were mainly controlled by
natural soil-forming factors. Among the six contaminating elements, the
accumulation of soil Hgwas mainly attributed to long-termsewage irrigation,
whereas Cr, Ni and Zn were mainly derived from industrial