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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

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  • Qi Zhou

    (Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China
    College of Environment, Hohai University, Nanjing 210098, China
    College of Civil Engineering and Architecture, Tongling University, Tongling 244061, China)

  • Yong Pang

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

  • Xue Wang

    (College of Environment, Hohai University, Nanjing 210098, China)

  • Xiao Wang

    (College of Environment, Hohai University, Nanjing 210098, China)

  • Yong Niu

    (College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China)

  • Jianjian Wang

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

Abstract

To provide a reference for risk management of water sources, this study screens the key risk supervision areas around river-type water sources (hereinafter referred to as the water sources) threatened by multiple fixed risk sources (the risk sources), and establishes a comprehensive methodological system. Specifically, it comprises: (1) method of partitioning risk source concentrated sub-regions for screening water source perimeter key risk supervision areas; (2) approach of determining sub-regional risk indexes (SrRI, which characterizes the scale of sub-regional risks) considering factors like risk distribution intensity within sub-regions, risk indexes of risk sources (RIRS, characterizing the risk scale of risk sources) and the number of risk sources; and (3) method of calculating sub-region’s risk threats to the water sources (SrTWS) which considers the positional relationship between water sources and sub-regions as well as SrRI, and the criteria for determining key supervision sub-regions. Favorable effects are achieved by applying this methodological system in determining water source perimeter sub-regions distributed along the Yangtze’s Nanjing section. Results revealed that for water sources, the key sub-regions needing supervision were SD16 , SD06 , SD21 , SD26 , SD15 , SD03 , SD02 , SD32 , SD10 , SD11 , SD14 , SD05 , SD27 , etc., in the order of criticality. The sub-region with the greatest risk threats on the water sources was SD16 , which was located in the middle reaches of Yangtze River. In general, sub-regions along the upper Yangtze reaches had greater threats to water sources than the lower reach sub-regions other than SD26 and SD21 . Upstream water sources were less subject to the threats of sub-regions than the downstream sources other than NJ09B and NJ03.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jsusta:v:9:y:2017:i:2:p:283-:d:90519
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    References listed on IDEAS

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    1. Zhang, H. & Huang, G.H., 2011. "Assessment of non-point source pollution using a spatial multicriteria analysis approach," Ecological Modelling, Elsevier, vol. 222(2), pages 313-321.
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    Cited by:

    1. 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.

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