Effect of tree harvest intervals on the removal of heavy metals from a contaminated soil in a field experiment

Pavla Kubátová, Jiřina Száková, Kateřina Břendová, Stanislava Kroulíková-Vondráčková, Markéta Drešlová and Pavel Tlustoš
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Pavla Kubátová: Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague 6 - Suchdol, Czech Republic
Jiřina Száková: Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague 6 - Suchdol, Czech Republic
Kateřina Břendová: Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague 6 - Suchdol, Czech Republic
Stanislava Kroulíková-Vondráčková: Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague 6 - Suchdol, Czech Republic
Markéta Drešlová: Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague 6 - Suchdol, Czech Republic

Plant, Soil and Environment, 2018, vol. 64, issue 3, 132-137

Abstract: Four clones of short rotation coppice (SRCs) were investigated for phytoextraction of soil contaminated by risk elements (REs), especially Cd, Pb and Zn. As a main experimental factor, the influence of rotation length on the removal of REs was assessed. The field experiment with two Salix clones (S1 - (Salix schwerinii × Salix viminalis) ×S. viminalis; S2 - S. × smithiana) and two Populus clones (P1 - Populus maximowiczii × Populus nigra; P2 - P. nigra) was established in April 2008 on moderately contaminated soil. For the first time, all clones were harvested in February 2012 (20124y) after 4 years. Subsequently each plot was equally split into halves. The first half of the SRC clones was harvested in February 2014 after 2 years (20142y) and again it was harvested in February 2016 after further 2 years (20162y). The second half was harvested in February 2016 after 4 years (20164y). The results showed that the biomass production for the second 4-year harvest period was significantly higher for all clones but the metal concentration was lower in the mentioned period. 4-year rotation seems to be more advantageous for the phytoextraction than two 2-year rotations. The highest metal removal presented by remediation factors (RFs) per 4 years for Cd (6.39%) and for Zn (2.55%) were found for S2 in the harvest 20164y treatment. Removal of Pb was the highest by P1 clone with very low RF per 4 years (0.04%). Longer rotation is also economically superior.

Keywords: willow; poplar; cadmium; lead; zinc; contamination (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:64:y:2018:i:3:id:755-2017-pse

DOI: 10.17221/755/2017-PSE

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