ULRIKSEN, Christopher; GINOCCHIO, Rosanna; MENCH, Michel; NEAMAN, Alexander

doi:10.1080/15226514.2011.628716

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ULRIKSEN, Christopher
Pontificia Universidad Católica de Valparaíso [PUCV]

GINOCCHIO, Rosanna
Centro de Investigación Minera y Metalúrgica

MENCH, Michel
Biodiversité, Gènes & Communautés [BioGeCo]

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Ce document a été publié dans

International Journal of Phytoremediation. 2012, vol. 14, n° 8, p. 820-833

Taylor & Francis

Résumé en anglais

The revegetation of soils affected by historic depositions of an industrial complex in Central Chile was studied. The plant re-colonization from the existing soil seed bank and changes in the physico-chemical properties of the soil were evaluated in field plots amended with lime and/or compost. We found that the application of lime and/or compost decreased the Cu2+ ion activity in the soil solution and the exchangeable Cu in the soil, showing an effective Cu immobilization in the topsoil. Whereas lime application had no effect on plant productivity in comparison with the unamended control, the application of compost and lime+compost increased the plant cover and aboveground biomass due to the higher nutrient availability and water-holding capacity of the compost-amended soils. Although the Cu2+ activity and the exchangeable Cu were markedly lower in the amended soils than in the unamended control, the shoot Cu concentrations of Lolium spp. and Eschscholzia californica did not differ between the treatments.< Réduire

Mots clés

Ventanas industrial complex

Mots clés en anglais

metal toxicity

bioavailability

phytostabilization

in situ immobilization

Puchuncavi Valley