Spatial Variability of Cu,Zn under Different Landforms in Shuangliu County
Taking farmland in Shuangliu County as an example,by the method of conventional statistical analysis and normal distribution test,the spatial variability of the heavy metal including copper( Cu) and zinc( Zn) pollution situation was obtained. The results showed that the contents of Cu and Zn in arable soil did not exceed the second level criterion of the soil environmental quality standard( GB156182- 1995) for different landforms. The contents of Cu and Zn followed the normal distribution. The semi-variogram models for the Cu and Zn were correlated in a certain spatial range by GS + software. The optimal estimation was performed for the no determination of heavy metals including Cu and Zn using the method of Kriging interpolation. The map of Kriging interpolation reflected the spatial variability of the Cu and Zn for the arable soil well in Shuangliu County.