Distribution of P, K, Ca, Mg, Cd, Cu, Fe, Mn, Pb and Zn in wood and bark age classes of willows and poplars used for phytoextraction on soils contaminated by risk elements
Jazyk angličtina Země Německo Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
26201656
DOI
10.1007/s11356-015-5043-0
PII: 10.1007/s11356-015-5043-0
Knihovny.cz E-zdroje
- Klíčová slova
- Cadmium, Heavy metals, Lead, Phosphorus, Phytoremediation, Populus spp, Salix spp, Zinc,
- MeSH
- biodegradace MeSH
- biomasa MeSH
- dřevo metabolismus MeSH
- kůra rostlin metabolismus MeSH
- látky znečišťující půdu metabolismus MeSH
- Populus metabolismus MeSH
- prvky MeSH
- regenerace a remediace životního prostředí * MeSH
- Salix metabolismus MeSH
- těžké kovy metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- látky znečišťující půdu MeSH
- prvky MeSH
- těžké kovy MeSH
Fast-growing clones of Salix and Populus have been studied for remediation of soils contaminated by risk elements (RE) using short-rotation coppice plantations. Our aim was to assess biomass yield and distributions of elements in wood and bark of highly productive willow (S1--[Salix schwerinii × Salix viminalis] × S. viminalis, S2--Salix × smithiana clone S-218) and poplar (P1--Populus maximowiczii × Populus nigra, P2--P. nigra) clones with respect to aging. The field experiment was established in April 2008 on moderately Cd-, Pb- and Zn- contaminated soil. Shoots were harvested after four seasons (February 2012) and separated into annual classes of wood and bark. All tested clones grew on contaminated soils, with highest biomass production and lowest mortality exhibited by P1 and S2. Concentrations of elements, with exception of Ca and Pb, decreased with age and were higher in bark than in wood. The Salix clones were characterised by higher removal of Cd, Mn and Zn compared to the Populus clones. Despite generally higher RE content in young shoots, partly due to lower wood/bark ratios and higher RE concentrations in bark, the overall removal of RE was higher in older wood classes due to higher biomass yield. Thus, longer rotations seem to be more effective when phytoextraction strategy is considered. Of the four selected clones, S1 exhibited the best removal of Cd and Zn and is a good candidate for phytoextraction.
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