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

Qi Zhou, Yong Pang, Xue Wang, Xiao Wang, Yong Niu and Jianjian Wang
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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
Yong Pang: Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, 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

Sustainability, 2017, vol. 9, issue 2, 1-23

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.

Keywords: multiple risk source; river-type water source; sub-region partition; SrRI; key risk supervision sub-region determination (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:9:y:2017:i:2:p:283-:d:90519

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