Detailed Information on Publication Record
2016
Spatial distribution and risk assessment of metals in agricultural soils
BEDNÁŘOVÁ, Zdenka, Jiří KALINA, Ondřej HÁJEK, Milan SÁŇKA, Klára KOMPRDOVÁ et. al.Basic information
Original name
Spatial distribution and risk assessment of metals in agricultural soils
Authors
BEDNÁŘOVÁ, Zdenka (203 Czech Republic, belonging to the institution), Jiří KALINA (203 Czech Republic, belonging to the institution), Ondřej HÁJEK (203 Czech Republic, belonging to the institution), Milan SÁŇKA (203 Czech Republic, belonging to the institution) and Klára KOMPRDOVÁ (203 Czech Republic, guarantor, belonging to the institution)
Edition
GEODERMA, AMSTERDAM, ELSEVIER SCIENCE BV, 2016, 0016-7061
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10511 Environmental sciences
Country of publisher
Netherlands
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 4.036
RIV identification code
RIV/00216224:14310/16:00093549
Organization unit
Faculty of Science
UT WoS
000385322500012
Keywords in English
Soil contamination; Spatial autocorrelation; Crop safety; Risk mapping
Tags
International impact, Reviewed
Změněno: 19/3/2018 15:09, Mgr. Lucie Jarošová, DiS.
Abstract
V originále
The purpose of the presented study was to identify possible ecological and health risks by metal contamination in soil. More than 50,000 topsoil samples in agricultural soil were used to evaluate spatial concentrations and risks posed by selected metals on a national scale. Variograms and correlograms were used to identify metal spatial patterns and appropriate sampling distances. All metals were spatially dependent on short distances (up to 7 km). Optimal sampling densities to detect contamination at the local scale were estimated to be at around 1 sample per 0.5 km for Cd, Cu and Zn and 1.5-2 km for Pb, Hg and Ni based on Moran's index = 0.7. The concentrations of metals were partly influenced by precipitation and pH, but mostly by geology and industry. The Kriging method was used to create interpolated maps for individual metals. High concentrations of Cd, Pb and Zn were found in well-known mining areas (the Ore Mountains, the Upper Silesian Basin, the towns of Kutna Hora and Vibram). Elevated Ni and Hg concentrations resulted mainly from the nature of the parent rock material. Cu contamination was specifically influenced by Cu-based fungicides applied on soils where hop and wine are grown. Czech and European legal limits for various pH and soil textures were applied to identify potential risk areas. A relatively large area of agricultural soil (16%) is above the prevention limit for at least one metal. However, only a few localities exceed the limits with respect to food chain contamination and the inhibition of plant growth. Comparison of our results with European studies (LUCAS, GEMAS, FOREGS) points to the need for high density sampling in order to conduct accurate risk assessment and demonstrates that serious soil contamination happens (and needs monitoring) at the local and not the continental scale.
Links
LM2015051, research and development project |
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LO1214, research and development project |
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