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

To chci

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 x Salix viminalis) x S. viminalis; S2 - S. x smithiana) and two Populus clones (P1 - Populus maximowiczii x 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. … celý popis

Podrobná bibliografie

Hlavní autor

Pavla Kubátová

Další autoři

Jiřina Száková, 1963- , Kateřina Břendová, Stanislava Kroulíková-Vondráčková, Markéta Drešlová, Pavel Tlustoš, 1970-

Typ dokumentu

Články

Fyzický popis

2 ilustrace

Publikováno v

Plant, Soil and Environment. -- ISSN 1214-1178. -- Roč. 64, č. 3 (2018), s. 132-137

Témata

agrolesnictví

TIMBER TREES

FIELD EXPERIMENTATION

EXPERIMENTAL DESIGN

SALIX VIMINALIS

POPULUS MAXIMOWICZII

POPULUS NIGRA

CLONES

CULTIVATION

POLLUTED SOIL

CADMIUM

LEAD

nutrient cycling in ecosystems

Biosorption (bioremediation)

BIOACCUMULATION

BIOMASS

DRY MATTER CONTENT

nutrient balance (plants)

užitkové stromy

polní pokusy

experimentální design

Salix viminalis

Populus maximowiczii

topol černý

klony

kultivace

hustota populace

znečištěné půdy

chemická kontaminace

kadmium

olovo

zinek

koloběh živin

biosorpce a biologická dekontaminace

biosorpce

biomasa

obsah sušiny

bilance živin (rostlin)

Příbram (Česko)

rychle rostoucí dřeviny > remediační faktor > doba obmýtí

Popis jednotky

1 graf, 1 tabulka

Bibliografie

Seznam literatury na s. 136-137,