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Changes in Metal Availability and Improvements in Microbial Properties After Phytoextraction of a Cd, Zn and Pb Contaminated Soil

  • Wenhao Yang
  • Pei Li
  • Christopher Rensing
  • San’an Nie
Article

Abstract

Assessing the effects of phytoextraction on soil properties is important for successful implementation of this method. This study was conducted to evaluate the effects of phytoextraction by Sedum alfredii Hance on the availability of metals and improvement of the microbial community (biomass and structure) of a Cd, Zn and Pb contaminated soil. Phytoextraction significantly decreased the acid extractable, Mn/Fe oxide and organic matter bound fractions of Cd and Zn as well as the acid extractable Pb in the rhizosphere soil. Soil microbial biomass, total, bacterial, actinomycete, fungal, AM fungal, and protozoa phospholipid fatty acids (PLFAs) were significantly enhanced. The ratio of fungal to bacterial and gram-positive to gram-negative bacterial PLFAs were significantly changed. Redundancy analysis showed that microbial biomass and specific groups of PLFAs were negatively correlated with available metals while positively correlated with dissolved organic carbon/organic acids. In conclusion, phytoextraction by S. alfredii reduced available metal concentrations and improved soil microbial properties.

Keywords

Heavy metal Phytoextraction Sedum alfredii Rhizosphere Chemical properties Microbial properties 

Notes

Acknowledgements

This research supported by the National Natural Science Foundation of China (Grant No. 41501345), the Natural Science Foundation of Fujian Province (Grant No. 2015J01155), the Foundation for Distinguished Young Scholars of Fujian Agriculture and Forestry University (Grant No. XJQ201628) and the Foundation of Central Guidance for Local Development (Grant No. 2016L3004).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Wenhao Yang
    • 1
  • Pei Li
    • 1
  • Christopher Rensing
    • 1
  • San’an Nie
    • 2
  1. 1.Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhouChina
  2. 2.College of Life SciencesFujian Agriculture and Forestry UniversityFuzhouChina

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