868090.fig.002a
(a)
868090.fig.002b
(b)
Figure 2: Physical and chemical characteristics of the soil samples ( ) from the test site DEMMIN: particle size fractions sand (63–2000 μm), silt (2–63 μm), and clay (0–2 μm) (a) and total carbon (TC), organic carbon (OC), inorganic carbon (IC), and iron content (Fe2O3) (b).