Spatial variability of heavy metals in soil of Three-Gorges Reservior in Chongqing
重庆三峡库区耕地土壤重金属含量的空间变异性研究

The spatial variability of heavy metals in soil of Three-Gorges Reservior in Chongqing was studied.The results show that the Hg and Cr of soil heavy(metal) are distributed lognormally.The semivariogram models of Hg and Cr are(power) and spherical.These observed(items) are correlated in a given (spatial)(range.) The kriging method is applied to(estimate) the unobserved points and their(group) maps are obtained.The spatial variabilities of the heavy metals in(Chongqing) can be reflected clearly in the maps.