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Targeting Remediation Dredging by Ecological Risk Assessment of Heavy Metals in Lake Sediment: A Case Study of Shitang Lake, China

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  • Zhongya Fan

    (Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
    National Key Laboratory of Water Environmental Simulation and Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China)

  • Wencai Wang

    (National Key Laboratory of Water Environmental Simulation and Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China)

  • Chunyan Tang

    (Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
    National Key Laboratory of Water Environmental Simulation and Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China)

  • Yiping Li

    (Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China)

  • Zhong Wang

    (National Key Laboratory of Water Environmental Simulation and Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China)

  • Shu Lin

    (National Key Laboratory of Water Environmental Simulation and Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China)

  • Fantang Zeng

    (National Key Laboratory of Water Environmental Simulation and Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China)

Abstract

Understanding the spatial distribution and pollution characteristics of heavy metals in lake sediment is crucial for studying deposition and migration processes, assessing lake conditions, and determining the extent of remediation dredging. The present work is a case study of heavy metal pollution in Shitang Lake in Anhui province, China. Heavy metal concentrations were determined in sediment at locations across the lake to a depth of 100 cm, and pollution levels were assessed on the basis of the Geoaccumulation Index (Igeo) and Potential Ecological Risk Index (RI). Hg and Cd were the predominant heavy metals in the sediment, and the Igeo and RI indicated high pollution levels in the northern and southern zones of the lake. These findings can be used to guide the prioritization of dredging operations.

Suggested Citation

  • Zhongya Fan & Wencai Wang & Chunyan Tang & Yiping Li & Zhong Wang & Shu Lin & Fantang Zeng, 2019. "Targeting Remediation Dredging by Ecological Risk Assessment of Heavy Metals in Lake Sediment: A Case Study of Shitang Lake, China," Sustainability, MDPI, vol. 11(24), pages 1-10, December.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:24:p:7251-:d:298962
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    References listed on IDEAS

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    1. Karl-Göran Mäler & Anastasios Xepapadeas & Aart de Zeeuw, 2003. "The Economics of Shallow Lakes," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 26(4), pages 603-624, December.
    2. Ewa Wojciechowska & Nicole Nawrot & Jolanta Walkusz-Miotk & Karolina Matej-Łukowicz & Ksenia Pazdro, 2019. "Heavy Metals in Sediments of Urban Streams: Contamination and Health Risk Assessment of Influencing Factors," Sustainability, MDPI, vol. 11(3), pages 1-14, January.
    3. Hongmeng Ye & Hao Yang & Nian Han & Changchun Huang & Tao Huang & Guoping Li & Xuyin Yuan & Hong Wang, 2019. "Risk Assessment Based on Nitrogen and Phosphorus Forms in Watershed Sediments: A Case Study of the Upper Reaches of the Minjiang Watershed," Sustainability, MDPI, vol. 11(20), pages 1-21, October.
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    1. Kenanga Sari & Tri Retnaningsih Soeprobowati & Jumari Jumari & Riche Hariyati & Jerry R. Miller, 2021. "Trace Metals and Diatom Stratigraphy along the Sill between Lakes Telaga Warna and Telaga Pengilon, Dieng, Central Java, Indonesia," Sustainability, MDPI, vol. 13(7), pages 1-14, March.
    2. Yanhui Guo & Yongfeng Xu & Chenming Zhu & Pingping Li & Yongli Zhu & Jiangang Han, 2022. "How Does Adjacent Land Use Influence Sediment Metals Content and Potential Ecological Risk in the Hongze Lake Wetland?," IJERPH, MDPI, vol. 19(16), pages 1-15, August.

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