Fig 1.
Localization of sampling point.
Table 1.
Selected physical and physicochemical properties and total trace element content of soil and organic amendments.
Table 2.
Some characteristics of the light fraction separated from the combinations studied.
Fig 2.
The stock of trace element in the bulk soil and the light fraction.
Table 3.
Total amount of Cd, Cu, Pb and Zn (in mg kg of fraction-1) in the light fraction (n = 6).
Table 4.
EDTA-extracted content of Cd, Cu, Pb and Zn (in mg kg of fraction-1) in the light fraction.
Fig 3.
Metal speciation in particular combinations.
Fractions: F1 = water soluble, F2 = exchangeable, F3 = bound to carbonates, F4 = bound to Fe-Mn oxides, F5 = bound to organic matter and F6 = residual.
Fig 4.
Changes in DOC concentration during the incubation time.
Fig 5.
Graph of a principal component analysis.