Poplar rotation coppice at a trace element-contaminated phytomanagement site: A 10-year study revealing biomass production, element export and impact on extractable elements.

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ID: 91563
2020
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Abstract
Growing lignocellulosic crops on marginal lands could compose a substantial proportion of future energy resources. The potential of poplar was explored, by devising a field trial of two hectares in 2007 in a metal-contaminated site to quantify the genotypic variation in the growth traits of 14 poplar genotypes grown in short-rotation coppice and to assess element transfer and export by individual genotypes. Our data led us to conclusions about the genotypic variations in poplar growth on a moderately contaminated site, with the Vesten genotype being the most productive. This genotype also accumulated the least amounts of trace elements, whereas the Trichobel genotype accumulated up to 170 mg Zn kg DW in the branches, with large variation being exhibited among the genotypes for trace element (TE) accumulation. Soil element depletion occurred for a range of TEs, whereas the soil content of major nutrients and the pH remained unchanged or slightly increased after 10 years of poplar growth. The higher TE content of bark tissues compared with the wood and the higher proportion of bark in branches compared with the wood led us to recommend that only stem wood be harvested, instead of the whole tree, which will enable a reduction in the risks encountered with TE-enriched biomass in the valorization process.
Reference Key
chalot2020poplarthe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Chalot, Michel;Girardclos, Olivier;Ciadamidaro, Lisa;Zappelini, Cyril;Yung, Loic;Durand, Alexis;Pfendler, Stéphane;Lamy, Isabelle;Driget, Vincent;Blaudez, Damien;
Journal The Science of the total environment
Year 2020
DOI
S0048-9697(19)34243-3
URL
Keywords
biomass yield export of trace elements phytomanagement poplar genotypes

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