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Limitations for phytoextraction management on metal-polluted soils with poplar short rotation coppice-evidence from a 6-year field trial

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Abstract
Poplar clones were studied for their phytoextraction capacity in the second growth cycle (6-year growth) on a site in the Belgian Campine region, which is contaminated with Cd and Zn via historic atmospheric deposition of nearby zinc smelter activities. The field trial revealed regrowth problems for some clones that could not be predicted in the first growth cycle. Four allometric relations were assessed for their capacity to predict biomass yield in the second growth cycle. A power function based on the shoot diameter best estimates the biomass production of poplar with R-2 values between 0.94 and 0.98. The woody biomass yield ranged from 2.1 to 4.8 ton woody Dry Mass (DM) ha(-1) y(-1). The primary goal was to reduce soil concentrations of metals caused by phytoextraction. Nevertheless, increased metal concentrations were determined in the topsoil. This increase can partially be explained by the input of metals from deeper soil layers in the top soil through litterfall. The phytoextraction option with poplar short rotation coppice in this setup did not lead to the intended soil remediation in a reasonable time span. Therefore, harvest of the leaf biomass is put forward as a crucial part of the strategy for soil remediation through Cd/Zn phytoextraction.
Keywords
Cadmium (Cd), Campine region, phytoextraction, poplar, short rotation coppice, zinc (Zn), BIOMASS PRODUCTION, HEAVY-METALS, AGRICULTURAL SOILS, CONTAMINATED SITES, ENERGY-PRODUCTION, WILLOW, SALIX, ZN, CD, PHYTOREMEDIATION

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Chicago
Michels, Evi, Brecht Annicaert, Sofie De Moor, Lotte Van Nevel, Matthias De Fraeye, L Meiresonne, J Vangronsveld, Filip Tack, YS Ok, and Erik Meers. 2018. “Limitations for Phytoextraction Management on Metal-polluted Soils with Poplar Short Rotation Coppice-evidence from a 6-year Field Trial.” International Journal of Phytoremediation 20 (1): 8–15.
APA
Michels, E., Annicaert, B., De Moor, S., Van Nevel, L., De Fraeye, M., Meiresonne, L., Vangronsveld, J., et al. (2018). Limitations for phytoextraction management on metal-polluted soils with poplar short rotation coppice-evidence from a 6-year field trial. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION, 20(1), 8–15.
Vancouver
1.
Michels E, Annicaert B, De Moor S, Van Nevel L, De Fraeye M, Meiresonne L, et al. Limitations for phytoextraction management on metal-polluted soils with poplar short rotation coppice-evidence from a 6-year field trial. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION. 2018;20(1):8–15.
MLA
Michels, Evi, Brecht Annicaert, Sofie De Moor, et al. “Limitations for Phytoextraction Management on Metal-polluted Soils with Poplar Short Rotation Coppice-evidence from a 6-year Field Trial.” INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 20.1 (2018): 8–15. Print.
@article{8569013,
  abstract     = {Poplar clones were studied for their phytoextraction capacity in the second growth cycle (6-year growth) on a site in the Belgian Campine region, which is contaminated with Cd and Zn via historic atmospheric deposition of nearby zinc smelter activities. The field trial revealed regrowth problems for some clones that could not be predicted in the first growth cycle. Four allometric relations were assessed for their capacity to predict biomass yield in the second growth cycle. A power function based on the shoot diameter best estimates the biomass production of poplar with R-2 values between 0.94 and 0.98. The woody biomass yield ranged from 2.1 to 4.8 ton woody Dry Mass (DM) ha(-1) y(-1). The primary goal was to reduce soil concentrations of metals caused by phytoextraction. Nevertheless, increased metal concentrations were determined in the topsoil. This increase can partially be explained by the input of metals from deeper soil layers in the top soil through litterfall. The phytoextraction option with poplar short rotation coppice in this setup did not lead to the intended soil remediation in a reasonable time span. Therefore, harvest of the leaf biomass is put forward as a crucial part of the strategy for soil remediation through Cd/Zn phytoextraction.},
  author       = {Michels, Evi and Annicaert, Brecht and De Moor, Sofie and Van Nevel, Lotte and De Fraeye, Matthias and Meiresonne, L and Vangronsveld, J and Tack, Filip and Ok, YS and Meers, Erik},
  issn         = {1522-6514},
  journal      = {INTERNATIONAL JOURNAL OF PHYTOREMEDIATION},
  keyword      = {Cadmium (Cd),Campine region,phytoextraction,poplar,short rotation coppice,zinc (Zn),BIOMASS PRODUCTION,HEAVY-METALS,AGRICULTURAL SOILS,CONTAMINATED SITES,ENERGY-PRODUCTION,WILLOW,SALIX,ZN,CD,PHYTOREMEDIATION},
  language     = {eng},
  number       = {1},
  pages        = {8--15},
  title        = {Limitations for phytoextraction management on metal-polluted soils with poplar short rotation coppice-evidence from a 6-year field trial},
  url          = {http://dx.doi.org/10.1080/15226514.2016.1207595},
  volume       = {20},
  year         = {2018},
}

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