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Management with willow short rotation coppice increase the functional gene diversity and functional activity of a heavy metal polluted soil
Institute for Environmental Genomics and Department of Microbiology and Plant Biology, University of Oklahoma, Norman.
Institute for Environmental Genomics and Department of Microbiology and Plant Biology, University of Oklahoma, Norman.
Hasselt University, Centre for Environmental Sciences, Agoralaan Building D, B-3590 Diepenbeek.
Hasselt University, Centre for Environmental Sciences, Agoralaan Building D, B-3590 Diepenbeek.
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2015 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 138, p. 469-477Article in journal (Refereed) Published
Abstract [en]

We studied the microbial functional diversity, biochemical activity, heavy metals (HM) availability and soil toxicity of Cd, Pb and Zn contaminated soils, kept under grassland or short rotation coppice (SRC) to attenuate the risks associated with HM contamination and restore the soil ecological functions. Soil microbial functional diversity was analyzed by the GeoChip, a functional gene microarray containing probes for genes involved in nutrient cycling, metal resistance and stress response. Soil under SRC showed a higher abundance of microbial genes involved in C, N, P and S cycles and resistance to various HM, higher microbial biomass, respiration and enzyme activity rates, and lower HM availability than the grassland soil. The linkages between functional genes of soil microbial communities and soil chemical properties, HM availability and biochemical activity were also investigated. Soil toxicity and N, P and Pb availability were important factors in shaping the microbial functional diversity, as determined by CCA. We concluded that in HM contaminated soils the microbial functional diversity was positively influenced by SRC management through the reduction of HM availability and soil toxicity increase of nutrient cycling. The presented results can be important in predicting the long term environmental sustainability of plant-based soil remediation.

Place, publisher, year, edition, pages
2015. Vol. 138, p. 469-477
National Category
Other Environmental Engineering
Research subject
Waste Science and Technology
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URN: urn:nbn:se:ltu:diva-14027DOI: 10.1016/j.chemosphere.2015.06.062ISI: 000361772800064PubMedID: 26183942Scopus ID: 2-s2.0-84940950948Local ID: d59a710a-c768-44d6-9cd2-2d4dd5233b4dOAI: oai:DiVA.org:ltu-14027DiVA, id: diva2:986981
Note
Validerad; 2015; Nivå 2; 20150811 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Kumpiene, Jurate

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