J 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

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
Name: Centrum pro výzkum toxických látek v prostředí (Acronym: RECETOX RI)
Investor: Ministry of Education, Youth and Sports of the CR
LO1214, research and development project
Name: Centrum pro výzkum toxických látek v prostředí (Acronym: RECETOX)
Investor: Ministry of Education, Youth and Sports of the CR