Geo-statistical analysis and evaluation of soil heavy metal pollution on a field scale

Taking three fields of ecological farm in Beijing as a case, using the geo-statistics method, the variogram was calculated, and the fitting model of soil heavy metals on field scale was established. As a result, the metal spatial distribution map was generated by using Kriging methods. Compared with the critical value of States Environmental Standard, the evaluation result of soil heavy metal pollution shows that the content of soil heavy metal is relative lower, there is no pollution can be found in the farm. The research results show that geo-statistics method may be a useful tool for decision-making support of agricultural management on the field scale.