Geology and groundwater regions to quantify primary salinity, sodicity and alkalinity in South African soils

Figures & data

Figure 1: Median soil electrical conductivity per geological unit

Figure 2: Median soil electrical conductivity per groundwater region

Figure 3: Median soil exchangeable sodium percentage (ESP) per geological unit

Figure 4: Median soil exchangeable sodium percentage (ESP) per groundwater region

Figure 5: Median soil pH_water per geological unit

Figure 6: Median soil pH_water per groundwater region