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Contamination and Spatial Variation of Heavy Metals in the Soil-Rice System in Nanxun County, Southeastern China

Author

Listed:
  • Keli Zhao

    (School of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Lin'an 311300, China)

  • Weijun Fu

    (School of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Lin'an 311300, China)

  • Zhengqian Ye

    (School of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Lin'an 311300, China)

  • Chaosheng Zhang

    (Geographic Information System Centre, Ryan Institute and School of Geography and Archaeology, National University of Ireland, Galway, Ireland)

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.

Suggested Citation

  • Keli Zhao & Weijun Fu & Zhengqian Ye & Chaosheng Zhang, 2015. "Contamination and Spatial Variation of Heavy Metals in the Soil-Rice System in Nanxun County, Southeastern China," IJERPH, MDPI, vol. 12(2), pages 1-18, January.
    • Handle: RePEc:gam:jijerp:v:12:y:2015:i:2:p:1577-1594:d:45212
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    Citations

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    Cited by:

    1. Zheyao Yu & Jiaqi Dong & Weijun Fu & Zhengqian Ye & Wanyi Li & Keli Zhao, 2019. "The Transfer Characteristics of Potentially Toxic Trace Elements in Different Soil-Rice Systems and Their Quantitative Models in Southeastern China," IJERPH, MDPI, vol. 16(14), pages 1-14, July.
    2. Sonia Collado-López & Larissa Betanzos-Robledo & Martha María Téllez-Rojo & Héctor Lamadrid-Figueroa & Moisés Reyes & Camilo Ríos & Alejandra Cantoral, 2022. "Heavy Metals in Unprocessed or Minimally Processed Foods Consumed by Humans Worldwide: A Scoping Review," IJERPH, MDPI, vol. 19(14), pages 1-25, July.
    3. Nur Syahirah Zulkafflee & Nurul Adillah Mohd Redzuan & Sara Nematbakhsh & Jinap Selamat & Mohd Razi Ismail & Sarva Mangala Praveena & Soo Yee Lee & Ahmad Faizal Abdull Razis, 2022. "Heavy Metal Contamination in Oryza sativa L. at the Eastern Region of Malaysia and Its Risk Assessment," IJERPH, MDPI, vol. 19(2), pages 1-22, January.
    4. Mahmuda Akter & Mohammad Humayun Kabir & Mohammad Ashraful Alam & Hammadullah Al Mashuk & Mohammad Mizanur Rahman & Mohammad Saiful Alam & Graham Brodie & S. M. Mofijul Islam & Yam Kanta Gaihre & Golu, 2023. "Geospatial Visualization and Ecological Risk Assessment of Heavy Metals in Rice Soil of a Newly Developed Industrial Zone in Bangladesh," Sustainability, MDPI, vol. 15(9), pages 1-14, April.
    5. Zhouping Liu & Qiaofen Zhang & Tiqian Han & Yanfei Ding & Junwei Sun & Feijuan Wang & Cheng Zhu, 2015. "Heavy Metal Pollution in a Soil-Rice System in the Yangtze River Region of China," IJERPH, MDPI, vol. 13(1), pages 1-16, December.
    6. Fanfu Zeng & Wei Wei & Mansha Li & Ruixue Huang & Fei Yang & Yanying Duan, 2015. "Heavy Metal Contamination in Rice-Producing Soils of Hunan Province, China and Potential Health Risks," IJERPH, MDPI, vol. 12(12), pages 1-10, December.
    7. Cristina Hegedus & Simona-Nicoleta Pașcalău & Luisa Andronie & Ancuţa-Simona Rotaru & Alexandra-Antonia Cucu & Daniel Severus Dezmirean, 2023. "The Journey of 1000 Leagues towards the Decontamination of the Soil from Heavy Metals and the Impact on the Soil–Plant–Animal–Human Chain Begins with the First Step: Phytostabilization/Phytoextraction," Agriculture, MDPI, vol. 13(3), pages 1-49, March.
    8. Zhongyang Wang & Bo Meng & Wei Zhang & Jinheng Bai & Yingxin Ma & Mingda Liu, 2018. "Multi-Target Risk Assessment of Potentially Toxic Elements in Farmland Soil Based on the Environment-Ecological-Health Effect," IJERPH, MDPI, vol. 15(6), pages 1-14, May.

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