Fig 1.
The position of Yazd province in Iran and the urban soil sampling points in Yazd city.
Table 1.
Potential ecological risk based on mEr and MRI and Enrichment Factor (EF) levels.
Fig 2.
Box-Plot of the heavy metal concentrations in urban soil.
(To display all the elements in an axis, the values of Fe and Mn are divided into 1000 and 10, respectively).
Table 2.
Descriptive statistics of heavy metal concentrations in urban soils of Yazd city, crust values [23] and Iran standard value [37] (mg·kg-1).
Table 3.
Pearson correlation coefficient matrix for heavy metal concentrations in the urban soil samples.
Fig 3.
Dendrograms of cluster analysis for heavy metals from Yazd city.
Table 4.
Rotated component matrix for the PCA loadings of heavy metals in urban soil of Yazd city.
Fig 4.
Box-plots of EF for heavy metals in the urban soil samples of Yazd.
Fig 5.
Box-plots of Igeo for heavy metals in the urban soil samples of Yazd.
Fig 6.
Box-plots of mEr and MRI for heavy metals in the urban soil samples of Yazd.
Fig 7.
The potential ecological risk factor (mEr) characteristics of heavy metals in the urban soils of Yazd.
Fig 8.
The spatial distribution of the Modified potential ecological risk index (MRI) in urban soil of Yazd city.