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Spatial Distribution and Migration Characteristics of Heavy Metals in Grassland Open-Pit Coal Mine Dump Soil Interface

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  • Zhen Cai

    (School of Public Policy & Manage, China University of Mining & Technology, Xuzhou 221116, China
    Engineering Research Center of Ministry of Education for Mine Ecological Restoration, China University of Mining & Technology, Xuzhou 221116, China)

  • Shaogang Lei

    (Engineering Research Center of Ministry of Education for Mine Ecological Restoration, China University of Mining & Technology, Xuzhou 221116, China
    School of Environment and Spatial Informatics, China University of Mining & Technology, Xuzhou 221116, China)

  • Yibo Zhao

    (Engineering Research Center of Ministry of Education for Mine Ecological Restoration, China University of Mining & Technology, Xuzhou 221116, China
    School of Environment and Spatial Informatics, China University of Mining & Technology, Xuzhou 221116, China)

  • Chuangang Gong

    (School of Spatial Informatics and Geomatics Engineering, Anhui University of Science and Technology, Huainan 232001, China)

  • Weizhong Wang

    (Inner Mongolia Zhungeer Banner Mining Area Career Development Center, Ordos 010399, China)

  • Changchun Du

    (Inner Mongolia Zhungeer Banner Mining Area Career Development Center, Ordos 010399, China)

Abstract

The open-pit coal mine dump in the study area contains many low-concentration heavy metal pollutants, which may cause pollution to the soil interface. Firstly, statistical analysis and geostatistical spatial interpolation methods described heavy metal pollution’s spatial distribution. The mine dump heavy metal pollution distribution is strongly random due to disorderly piles, but it is closely related to slope soil erosion. Furthermore, the soil deposition area is where pollutants accumulate. For example, all heavy metal elements converge at the bottom of the dump. Usually, the pollution in the lower part is higher than that in the upper part; the pollution in the lower step is higher than the upper step; the pollution in the soil deposition locations such as flat plate and slope bottom is higher than the soil erosion locations such as slope tip and middle slope. Finally, the hyperspectral remote sensing method described heavy metals pollution’s migration characteristics, that the pollutants could affect the soil interface by at least 1 km. This study provides a basis for preventing and controlling critical parts of mine dump heavy metal pollution and pollution path control.

Suggested Citation

  • Zhen Cai & Shaogang Lei & Yibo Zhao & Chuangang Gong & Weizhong Wang & Changchun Du, 2022. "Spatial Distribution and Migration Characteristics of Heavy Metals in Grassland Open-Pit Coal Mine Dump Soil Interface," IJERPH, MDPI, vol. 19(8), pages 1-17, April.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:8:p:4441-:d:788740
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    References listed on IDEAS

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    1. Yaya Liang & Xiaoyun Yi & Zhi Dang & Qin Wang & Houmei Luo & Jie Tang, 2017. "Heavy Metal Contamination and Health Risk Assessment in the Vicinity of a Tailing Pond in Guangdong, China," IJERPH, MDPI, vol. 14(12), pages 1-17, December.
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    Cited by:

    1. Jie Cao & Zhaohui Guo & Yongjun Lv & Man Xu & Chiyue Huang & Huizhi Liang, 2023. "Pollution Risk Prediction for Cadmium in Soil from an Abandoned Mine Based on Random Forest Model," IJERPH, MDPI, vol. 20(6), pages 1-11, March.

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