Abstract
In this paper, we take Funiu Mountain area as the target area, and collect forsythia and soil samples there and conduct environmental chemistry study on the spatial variability of heavy metal in forsythia grains in this area. The results show that the content of heavy metal in forsythia grains in most part of the area is lower than the national food hygiene standard, but in some surrounding areas of factories, the Cd content exceeds the standard. The Cu, Pb and Cd contents in soil have significant impacts on the contents and enrichment of the three heavy metal elements in forsythia. By using multiple linear regression, we obtain the prediction model for heavy metal content in forsythia. This model is of great statistical significance and can provide reference for the management of wild medicinal materials and the quality and safety control of wild medicinal products in Funiu Mountain area.
