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Environmental Risk Assessment and Regulatory Rating of Water Sources along the Yangtze River’s Nanjing Section under the Influence of Multiple Risk Sources

Author

Listed:
  • Qi Zhou

    (College of Civil Engineering and Architecture, Tongling University, Tongling 244061, Anhui, China)

  • Jing Zhang

    (College of Literature and Arts Media, Tongling University, Tongling 244061, Anhui, China)

  • Yong Niu

    (National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Institute of Lake Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China)

  • Jianjian Wang

    (College of Hydrometeorology, Nanjing University of Information Science and Technology, Nanjing 210044, China)

Abstract

To complement the current studies of risk assessment on water sources which seldom consider the distribution effects of multiple risk sources concentration, and improve the efficiency of water source supervision, this study establishes a method system for risk assessment of water sources and regulatory rating evaluation under the distribution effects of multiple risk sources concentration. The method system includes: (1) utilizing the single-risk source impact index to characterize the risk impact degree of the single-risk source on the water source, the index calculation method of single-risk source impact considers the risk degree and the distribution location of risk source; (2) using the multiple risk sources impact index to characterize the risk impact degree of the multiple risk sources on the water source, the index calculation method of multiple risk sources considers the impact index of single-risk source, the number of risk sources, and the distribution concentration of multiple risk sources; (3) the environmental risk assessment and regulatory rating evaluation method consider multiple risk sources impact index, anti-risk ability of water source, and the importance of water source. This method system has been applied to the environmental risk assessment and regulatory rating of eight water sources along the Nanjing Yangtze River, with excellent achievements. As the results reveal, eight water sources suffer 437 risk impacts from 175 risk sources, 69.04% of which are low-risk impacts and 13 are high-risk impacts. Longtan water source suffers the most risk impacts of 86, among which eight are high-risk impacts. The impacts of multiply-risk sources on the eight water sources are high-risk impacts. The impact index of multiple risk sources increases from the upstream water sources to the downstream water sources, reaching the maximum value of 5.267 at the most downstream Longtan water source. Though the environmental risk and supervision rating of Longtan water source is high, those of other water sources are rated as medium.

Suggested Citation

  • Qi Zhou & Jing Zhang & Yong Niu & Jianjian Wang, 2021. "Environmental Risk Assessment and Regulatory Rating of Water Sources along the Yangtze River’s Nanjing Section under the Influence of Multiple Risk Sources," Sustainability, MDPI, vol. 13(3), pages 1-24, February.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:3:p:1484-:d:490688
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    References listed on IDEAS

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    1. Sisira S. Withanachchi & Ilia Kunchulia & Giorgi Ghambashidze & Rami Al Sidawi & Teo Urushadze & Angelika Ploeger, 2018. "Farmers’ Perception of Water Quality and Risks in the Mashavera River Basin, Georgia: Analyzing the Vulnerability of the Social-Ecological System through Community Perceptions," Sustainability, MDPI, vol. 10(9), pages 1-26, August.
    2. Qi Zhou & Yong Pang & Xue Wang & Xiao Wang & Yong Niu & Jianjian Wang, 2017. "Determination of Key Risk Supervision Areas around River-Type Water Sources Affected by Multiple Risk Sources: A Case Study of Water Sources along the Yangtze’s Nanjing Section," Sustainability, MDPI, vol. 9(2), pages 1-23, February.
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    Cited by:

    1. Qi Zhou, 2022. "Environmental Risk Assessment of the Zhengrunzhou Water Source under the Influence of Oil Spill Accidents at the Wharf Group," Sustainability, MDPI, vol. 14(13), pages 1-28, June.
    2. Jiangyang Lin & Yuanhong Tian & Qian Yao & Yong Shi, 2023. "Structural Characteristics of Intergovernmental Water Pollution Control Cooperation Networks Using Social Network Analysis and GIS in Yangtze River Delta Urban Agglomeration, China," Sustainability, MDPI, vol. 15(18), pages 1-18, September.

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