NATURAL AND MAN-INDUCED PHYTOREMEDIATION IN SEVERAL MINE RESIDUES CONTAINING HIGH CONCENTRATION OF CD - Management of Hazardous Residues Containing Cd - page 159

b)
Figure 2 (a). Distribution of roots in a slag heap covered with soil and vegetation, b)
Eucalyptus tree felt down on the revegetated tailing heaps in Zimapan, Hidalgo,
México.
The application of soil layer on the top of the tailing heaps, allows the
revegetation with introduced and naturally invasive plants from the
surroundings, but the variability of the Cd concentration and other metals
strongly affects the survival of the plants, as a result, revegetation develops in
patches, and the percentage of surviving plants is low. Plants are able to grow