Triad method for assessing the remediation effect of humic preparations on urbanozems

The data on the pollutant content, ecological toxicity, and structural and functional specifics of soil microbial communities in urbanozem sampled in the city of Kirov were used to describe the remediation effect of humic substances (lignohumate and nanomagnetitohumate). The integral index of enviro...

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Bibliographic Details
Published in:Eurasian soil science 2015-06, Vol.48 (6), p.654-663
Main Authors: Pukalchik, M. A, Terekhova, V. A, Yakimenko, O. S, Kydralieva, K. A, Akulova, M. I
Format: Article
Language:English
Subjects:
bioactive properties
Bioremediation
Biota
Cities
Conservation of Soils
Degradation
Earth and Environmental Science
Earth Sciences
ecophysiology
ecotoxicology
Environmental risk
Geotechnical Engineering & Applied Earth Sciences
Humic acid
humic substances
Methods
Microbial activity
pollutants
Rehabilitation
Remediation
risk
soil microorganisms
Soils
toxic substances
Toxicants
Toxicity
urban soils
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Summary:The data on the pollutant content, ecological toxicity, and structural and functional specifics of soil microbial communities in urbanozem sampled in the city of Kirov were used to describe the remediation effect of humic substances (lignohumate and nanomagnetitohumate). The integral index of environmental risk on contaminated and background soil sites was calculated using the triad method. Based on varying Chemical Risk Index, Ecotoxicological Risk Index, and Ecological Risk Index, this method proved that humic substances are able to reduce ecological toxicity and transform the ecophysiological indices of biota in urban soils. The most vivid effect of humic products has been revealed on introduction of 0.0025 and 0.01% mass. The biological activity of nanomagnetitohumate and lignohumate, rather than their ability to bind toxicants, is apparently the principal factor controlling their remediating effect.
ISSN:1064-2293
1556-195X
DOI:10.1134/S1064229315060083