3.4. Spatial-cluster and spatial-outlier analyses
The results of LISA analysis for total concentrations of Cu, Ni, Zn in
soils are presented in Fig. 2. In general, the higher the value of Moran's
I, the stronger a spatial autocorrelation exists (Huo et al., 2012). Significantly
positively spatial autocorrelations, revealed by local Moran's I
value, were found for concentrations of Cu (Moran's I = 0.25), Ni
(Moran's I = 0.27), Zn (Moran's I = 0.31) in soils (P b 0.01), showing
the existence of clear spatial patterns in their spatial distributions (Fu