Analysis of heavy metal pollution based on kriging interpolation in the suburb of Yidu

The security problems of agricultural products caused by heavy metal pollution of soil have drawn more and more attention of the public, analysis of the distribution of the heavy metal content in soil of agricultural production base can provide reliable guidance for agricultural production. This paper selected the agricultural land in the suburb of Yidu as the research area, we analyzed the spatial distribution of Zinc, Copper and Chrome in soil by GIS, statistics and geostatistics, an evaluation has been made on the reference of the single factor index evaluation method for heavy metal on the basis of this study, and we made a spatial analysis for heavy metal pollution in the study area by the Kriging interpolation algorithm. The result of the research tells that the heavy metal content in the research area are within the normal range, but the distribution of the heavy metal content has something to do with human activities. But to make sure that the agricultural production base capable of producing long-term safety and no pollution productions, the local residents should maintain good living habits.