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

Zhen Cai, Shaogang Lei, Yibo Zhao, Chuangang Gong, Weizhong Wang and Changchun Du
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Zhen Cai: School of Public Policy & Manage, 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
Yibo Zhao: Engineering Research Center of Ministry of Education for Mine Ecological Restoration, 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

IJERPH, 2022, vol. 19, issue 8, 1-17

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.

Keywords: open-pit coal mine dump; heavy metal; soil interface; spatial distribution; hyperspectral measurement (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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