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Contamination and spatial variation of heavy metals in the soil-rice system in Nanxun County, Southeastern China.
Int J Environ Res Public Health. 2015 Jan 28; 12(2):1577-94.IJ

Abstract

There is an increasing concern about heavy metal contamination in farmland in China and worldwide. In order to reveal the spatial features of heavy metals in the soil-rice system, soil and rice samples were collected from Nanxun, Southeastern China. Compared with the guideline values, elevated concentrations of heavy metals in soils were observed, while heavy metals in rice still remained at a safe level. Heavy metals in soils and rice had moderate to strong spatial dependence (nugget/sill ratios: 13.2% to 49.9%). The spatial distribution of copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) in soils illustrated that their high concentrations were located in the southeast part. The high concentrations of cadmium (Cd) in soils were observed in the northeast part. The accumulation of all the studied metals is related to the long-term application of agrochemicals and industrial activities. Heavy metals in rice showed different spatial distribution patterns. Cross-correlograms were produced to quantitatively determine the spatial correlation between soil properties and heavy metals composition in rice. The pH and soil organic matter had significant spatial correlations with the concentration of heavy metals in rice. Most of the selected variables had clear spatial correlation ranges for heavy metals in rice, which could be further applied to divide agricultural management zones.

Authors+Show Affiliations

School of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Lin'an 311300, China. kelizhao@zafu.edu.cn.School of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Lin'an 311300, China. fuweijun@zafu.edu.cn.School of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Lin'an 311300, China. yezhq@zafu.edu.cn.Geographic Information System Centre, Ryan Institute and School of Geography and Archaeology, National University of Ireland, Galway, Ireland. chaosheng.zhang@nuigalway.ie.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25635917

Citation

Zhao, Keli, et al. "Contamination and Spatial Variation of Heavy Metals in the Soil-rice System in Nanxun County, Southeastern China." International Journal of Environmental Research and Public Health, vol. 12, no. 2, 2015, pp. 1577-94.
Zhao K, Fu W, Ye Z, et al. Contamination and spatial variation of heavy metals in the soil-rice system in Nanxun County, Southeastern China. Int J Environ Res Public Health. 2015;12(2):1577-94.
Zhao, K., Fu, W., Ye, Z., & Zhang, C. (2015). Contamination and spatial variation of heavy metals in the soil-rice system in Nanxun County, Southeastern China. International Journal of Environmental Research and Public Health, 12(2), 1577-94. https://doi.org/10.3390/ijerph120201577
Zhao K, et al. Contamination and Spatial Variation of Heavy Metals in the Soil-rice System in Nanxun County, Southeastern China. Int J Environ Res Public Health. 2015 Jan 28;12(2):1577-94. PubMed PMID: 25635917.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Contamination and spatial variation of heavy metals in the soil-rice system in Nanxun County, Southeastern China. AU - Zhao,Keli, AU - Fu,Weijun, AU - Ye,Zhengqian, AU - Zhang,Chaosheng, Y1 - 2015/01/28/ PY - 2014/11/08/received PY - 2015/01/10/accepted PY - 2015/1/31/entrez PY - 2015/1/31/pubmed PY - 2016/5/3/medline SP - 1577 EP - 94 JF - International journal of environmental research and public health JO - Int J Environ Res Public Health VL - 12 IS - 2 N2 - There is an increasing concern about heavy metal contamination in farmland in China and worldwide. In order to reveal the spatial features of heavy metals in the soil-rice system, soil and rice samples were collected from Nanxun, Southeastern China. Compared with the guideline values, elevated concentrations of heavy metals in soils were observed, while heavy metals in rice still remained at a safe level. Heavy metals in soils and rice had moderate to strong spatial dependence (nugget/sill ratios: 13.2% to 49.9%). The spatial distribution of copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) in soils illustrated that their high concentrations were located in the southeast part. The high concentrations of cadmium (Cd) in soils were observed in the northeast part. The accumulation of all the studied metals is related to the long-term application of agrochemicals and industrial activities. Heavy metals in rice showed different spatial distribution patterns. Cross-correlograms were produced to quantitatively determine the spatial correlation between soil properties and heavy metals composition in rice. The pH and soil organic matter had significant spatial correlations with the concentration of heavy metals in rice. Most of the selected variables had clear spatial correlation ranges for heavy metals in rice, which could be further applied to divide agricultural management zones. SN - 1660-4601 UR - https://www.unboundmedicine.com/medline/citation/25635917/Contamination_and_spatial_variation_of_heavy_metals_in_the_soil_rice_system_in_Nanxun_County_Southeastern_China_ L2 - https://www.mdpi.com/resolver?pii=ijerph120201577 DB - PRIME DP - Unbound Medicine ER -