Fujian Coastal Areas in Different Regions of Paddy Soil Heavy Metal Elements Enrichment Characteristics and Assessment of Environmental Quality

In this paper,through the investigation of different area of Fujian coastal regions of paddy soil heavy metal elements Hg,Cd,Pb pollution enrichment situation,collecting 195 samples,using single factor index and the index of geoaccumulation and Nemero comprehensive pollution index of soil environmental quality evaluation.The results showed that: Fujian coastal region paddy soil have different levels of heavy metal pollution.Individual pollution index evaluation results: Hg 4 grade,respectively is the security level,line level,light pollution and pollution level;Pb is the level of security;Cd 2 grade,respectively is the security level and cordon level.The Hg index of geoaccumulation 3 grade,respectively is the mild pollution level,moderate pollution level and intensity of pollution level;all Pb light pollution level;Cd 2 grade,light pollution level and moderate pollution level.Nemero comprehensive pollution index assessment results for the security level of 5 areas,cordon level there are 3 regions,light pollution grade 2 regions.Geological accumulation pollution index assessment results with single factor pollution index evaluation results have obvious difference.Survey of regional soil environment quality evaluation for the Cd,Pb average value does not exceed the national standard of soil environmental quality of two standard,Hg 40% area exceed the standard.Fujian coastal area soil heavy metal pollution have moderate to high ecological risk.