Greenhouse gas emissions from a Cu-contaminated soil remediated by in situ stabilization and phytomanaged by a mixed stand of poplar, willows and false indigo-bush

0480974 - BC 2018 RIV US eng J - Journal Article
Šimek, Miloslav - Elhottová, Dana - Mench, M. - Giagnoni, L. - Nannipieri, P. - Renella, G.
Greenhouse gas emissions from a Cu-contaminated soil remediated by in situ stabilization and phytomanaged by a mixed stand of poplar, willows and false indigo-bush.
International Journal of Phytoremediation. Roč. 19, č. 11 (2017), s. 976-984. ISSN 1522-6514. E-ISSN 1549-7879
R&D Projects: GA MŠMT LC06066; GA ČR GA526/09/1570; GA AV ČR IAA600660605
Institutional support: RVO:60077344
Keywords : denitrification activity * greenhouse gases * microbial biomass and activity * microbial community composition * phytomanagement
OECD category: Ecology
Impact factor: 1.886, year: 2017

Phytomanagement of trace element-contaminated soils can reduce soil toxicity and restore soil ecological functions, including the soil gas exchange with the atmosphere. We studied the emission rate of the greenhouse gases (GHGs) CO2, CH4 and N2O, and the potential CH4 oxidation, denitrification enzyme activity (DEA) and glucose mineralization of a Cu-contaminated soil amended with dolomitic limestone and compost, alone or in combination, after a 2-year phytomanagement with a mixed stand of Populus nigra, Salix viminalis, S. caprea and Amorpha fruticosa. Soil microbial biomass and microbial community composition after analysis of the phospholipid fatty acids (PLFA) profile were determined. Phytomanagement significantly reduced Cu availability and soil toxicity, increased soil microbial biomass and glucose mineralization capacity, changed the composition of soil microbial communities, and increased the CO2 and N2O emission rates and DEA. Despite such increases, microbial communities were evolving toward less GHG emission per unit of microbial biomass than in untreated soils. Overall, the aided phytostabilization option would allow methanotrophic populations to establish in the remediated soils due to decreased soil toxicity and increased nutrient availability.
Permanent Link: http://hdl.handle.net/11104/0277657