Figure 6. Relationships between soil total Cd concentrations (mg kg−1, DW) and vegetable Cd concentrations (mg kg−1, FW) for five species of main vegetables (soil pH: 3.79–7.72) (hollow diamonds represented samples with lower pH (3.79−5.00) removed for the regression analysis; the solid line is the sample regression line; dotted lines indicated the 95% confidence interval).
