The geological environments in the accumulation of heavy metals in soils of Pinar del Río
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Abstract
of integrally evaluating the geological environments of soil formation and their influence on
the processes erosion-sedimentation-contamination by heavy metals (HMs), in localities
destined to tobacco crop. To this end, two units with different degrees of intervention were
selected: the erosive surface (Consolation of the South unit) and the erosive - cumulative
surface (units of Pinar Río, San Juan and Martinez and San Luis). The pedological
prospecting work identified four main types of soils. They were at depths of 0-20 cm
described and sampled, to characterize the main properties that influence the accumulation
of HMs in soils. The analysis carried out indicated that natural conditions do not exert a
marked influence on the accumulation and availability of HMs, where the reference values
of Cd, Pb, Cu, Zn, Fe, Mn, Ni, Cr and Co are, lower than the standards of quality established
for Cuban soils.
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