Environmental Engineering Reference
In-Depth Information
double inoculation ( G. mosseae + P. fluorescens together) did not modify Cd
accumulation in this plant.
From these results we can say that it is important to use AMF and
beneficial microorganism's inoculation in plants before planting them in
polluted soils, taking in account specific plant-microbes associations that favor
remediation, revegetation and reduction of the toxic effects of metal in
polluted soils.
C ONCLUSION
Some of the native plants found on mine tailing sites polluted with high
concentrations of Cd may be used for phytoremediation or revegetation. Plants
found on tailing heaps behave mainly as excluders rather than accumulators of
Cd. The results obtained from different field sites regarding a bunch of
environmental conditions, levels of Cd and soil properties provide significant
information to remediate sites, even those with very high metal concentrations.
In order to promote a better environment for plant growth in polluted sites,
additions of organic matter and microbial activity improvement are essential.
A strategy to revegetate tailing heaps is to favor build up patches of plant
species. Experience observed in several researches suggests that in order to
establish an efficient low-cost remediation alternative, a combination of
pioneers and colonizing plants and microorganisms, especially including the
beneficial associations, is necessary.
R EFERENCES
Camprubi, A. 2003. Geoquimica de fluido de los depositos epitermales del
sureste del distrito de Temascaltepec, Estado de Mexico. Revista
Mexicana de Ciencias Geologicas 20: 107-123.
Camprubi, A., A. Canals, E. Cardellach, R.M. Prol-Ledesma and R. Rivera.
2001. The La guitarra Ag-Au low-sulfidation epithermal deposit,
Temascaltepec district, México: vein structure, mineralogy, and sulfide-
sulfosalt chemistry. Society of Economic Geologists Special Publication 8:
133-158.
Carrillo, G. R. and M.C.A. González. 2006. Metal accumulation in wild plants
surrounding mining wastes. Environmental Pollution 144: 84-91.
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