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The Transfer Characteristics of Potentially Toxic Trace Elements in Different Soil-Rice Systems and Their Quantitative Models in Southeastern China

Author

Listed:
  • Zheyao Yu

    (State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin′an 311300, China
    These two authors contributed equally to this work.)

  • Jiaqi Dong

    (State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin′an 311300, China
    Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Lin’an 311300, China
    These two authors contributed equally to this work.)

  • Weijun Fu

    (State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin′an 311300, China
    Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, Zhejiang A&F University, Lin’an 311300, China)

  • Zhengqian Ye

    (Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Lin’an 311300, China)

  • Wanyi Li

    (The Bureau of Agriculture and Forestry, Luqiao District, Taizhou City 318050, China)

  • Keli Zhao

    (State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin′an 311300, China
    Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Lin’an 311300, China)

Abstract

The potentially toxic trace elements (PTEs) transfer characteristics in the soil-rice system plays an important role in soil quality management, and it can be used to guide the safe rice production. We collected soil and rice samples from three typical rice production areas (Nanxun, Shengzhou, Wenling in northern, central, and southern parts of Zhejiang Province, China). The controlling factors of PTEs′ transfer were studied for Hybrid rice and Japonica rice. The results indicated that the pH, organic matter (OM), and electrical conductivity (EC) values of Shengzhou were all lower than that of the other two production areas (Nanxun and Wenling). The concentrations of PTEs in the soils of Wenling were significantly higher than that in the other two areas, while the concentrations of PTEs in the rice of Shengzhou were significantly higher than that of Wenling and Nanxun ( p < 0.05). The enrichment index (EI) of PTEs were also different in the three production areas. The EIs of Cd and Zn were higher than that of Cu and Ni in the three production areas, and the EIs in Shengzhou were significantly higher than that of other two areas ( p < 0.05). The soil physico-chemical properties and PTEs’ fractions both played important roles in PTEs transfer in the soil-rice system. The log-linear model of EI for PTEs can predict the availability of PTEs in the soil-rice system under practical production areas. The accuracy of the model prediction of EI for Japonica rice was better than that for the Hybrid rice. The prediction model of Ni was better than that of other PTEs for both rices.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:14:p:2503-:d:248115
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    References listed on IDEAS

    as
    1. Shiying Yu & Zhoulun Chen & Keli Zhao & Zhengqian Ye & Luyao Zhang & Jiaqi Dong & Yangfeng Shao & Chaosheng Zhang & Weijun Fu, 2019. "Spatial Patterns of Potentially Hazardous Metals in Soils of Lin’an City, Southeastern China," IJERPH, MDPI, vol. 16(2), pages 1-14, January.
    2. 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.
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