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Frontiers of Environmental Science & Engineering

ISSN 2095-2201

ISSN 2095-221X(Online)

CN 10-1013/X

Postal Subscription Code 80-973

2018 Impact Factor: 3.883

Front. Environ. Sci. Eng.    2015, Vol. 9 Issue (2) : 288-297    https://doi.org/10.1007/s11783-014-0642-4
RESEARCH ARTICLE
Operating mechanism and set pair analysis model of a sustainable water resources system
Chaoyang DU1,2, Jingjie YU1(), Huaping ZHONG3, Dandan WANG1,2
1. Institute of Geography Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Nanjing Hydraulic Research Institute, Nanjing 210029, China
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Abstract

There is no alternative to the world’s water resources, and their increasing scarcity is making it difficult to meet the world population’s water needs. This paper presents a sustainable water resources system (SWRS) and analyzes the operating mechanism that makes it possible to evaluate the status of such a system. A SWRS can be described as a complex coupling system that integrates water resources, social, economic and ecological systems into a whole. The SWRS’s operating mechanism is composed of dynamic, resistance and coordination components, and it interacts with and controls the system’s evolution process. The study introduces a new approach, set pair analysis theory, to measure the state of a SWRS, and an evaluation index system is established using the subsystems and operating mechanism of a SWRS. The evaluation index system is separated into three levels (goal level, criteria level and index level) and divides the index standard into five grades. An evaluation model of the SWRS based on set pair analysis theory is constructed, and an example of SWRS evaluation in Shanghai is presented. The connection degrees of the index in the three levels are calculated, and the connection degree of the goal index is calculated to be 0.342, which classifies the city’s SWRS condition as grade 2. The sustainable use of water resources in the region is determined to be at a relatively adequate level that meets the requirements of sustainable development.

Keywords sustainable water resources system      operating mechanism      set pair analysis model      Shanghai     
Corresponding Author(s): Jingjie YU   
Online First Date: 18 February 2014    Issue Date: 13 February 2015
 Cite this article:   
Chaoyang DU,Jingjie YU,Huaping ZHONG, et al. Operating mechanism and set pair analysis model of a sustainable water resources system[J]. Front. Environ. Sci. Eng., 2015, 9(2): 288-297.
 URL:  
https://academic.hep.com.cn/fese/EN/10.1007/s11783-014-0642-4
https://academic.hep.com.cn/fese/EN/Y2015/V9/I2/288
Fig.1  Interaction and relationship between subsystems in the SWRS
Fig.2  Schematic of a SWRS’s operating mechanism
goal level (A) criteria level (B) index level (C) unit
SWRS condition B1: water resources condition C11: mean annual precipitation mm
C12: per capita local water resources m3
C13: per capita cross-border water resources m3
C14: water resources per unit area m3
B2: water resources utilization condition C21: rate of water resources development and utilization %
C22: industry water reuse rate %
C23: per capita daily water consumption L·(p·d)−1
C24: per capita industrial water consumption m3·p−1
C25: irrigation amount per unit area m3·hm−2
B3: socio-economic condition C31: gross domestic product (GDP) per capita CNY·p−1
C32: population density p·km−2
C33: urbanization rate %
C34: water consumption of industrial added of ten thousand ¥ CNY·m−3
B4: ecological environment condition C41: per capita public green space m2·p−1
C42: waste water treatment rate %
C43: river length ratio for water with a grade better than 3 %
C44: groundwater recharge rate %
Tab.1  SWRS index system
index grade 1
(excellent)
grade 2
(good)
grade 3
(medium)
grade 4
(poor)
grade 5
(very poor)
index value
C11/mm 1200 1000 800 600 400 1171.7
C12/m3 5000 3000 2000 1000 500 173.7
C13/m3 30000 15000 8000 4000 2000 45981.6
C14/m3 1000 800 600 400 200 1676.2
C21/% 20 30 40 50 60 1.2
C22/% 90 70 50 30 20 82.4
C23/(L·(p·d)−1) 100 120 150 180 200 117
C24/(m3·p−1) 800 600 500 300 100 676.1
C25/(m3·hm−2) 4500 5000 5500 6000 6500 7935
C31/(CNY·p−1) 65000 55000 40000 30000 15000 76074
C32/(p·km−2) 500 1000 1500 2000 5000 3632
C33/% 90 70 50 30 20 88.9
C34/m3 50 70 90 120 150 131
C41/(m2·p−1) 30 20 10 6 3 13.0
C42/% 90 70 50 30 10 81.9
C43/% 80 60 40 30 10 23.5
C44/% 60 50 40 30 20 96.0
Tab.2  Evaluation grades and index values
B1 B2 B3 B4 eigenvector (ω)
B1 1 1/2 2 1/2 0.193
B2 2 1 3 2 0.417
B3 1/2 1/3 1 1/2 0.121
B4 2 1/2 2 1 0.269
Tab.3  Pairwise comparison matrix
index ω index ω index ω
B1 0.193 C14 0.133 C32 0.283
B2 0.417 C21 0.423 C33 0.076
B3 0.121 C22 0.167 C34 0.489
B4 0.269 C23 0.233 C41 0.25
C11 0.267 C24 0.109 C42 0.25
C12 0.533 C25 0.067 C43 0.25
C13 0.067 C31 0.152 C44 0.25
Tab.4  Index weights of criteria and index levels
rm1 rm2 rm3 rm4 rm5
μ11 0.859 0.142 0 0 0
μ12 0 0 0 0 1
μ13 1 0 0 0 0
μ14 1 0 0 0 0
μ21 1 0 0 0 0
μ22 0.62 0.38 0 0 0
μ23 0.15 0.85 0 0 0
μ24 0.381 0.619 0 0 0
μ25 0 0 0 0 1
μ31 1 0 0 0 0
μ32 0 0 0 0.684 0.316
μ33 0.943 0.057 0 0 0
μ34 0 0 0.38 0.62 0
μ41 0 0.3 0.7 0 0
μ42 0.595 0.405 0 0 0
μ43 0 0 0 0.675 0.325
μ44 0.802 0.198 0 0 0
μ1 0.429 0.038 0 0 0.533
μ2 0.603 0.329 0 0 0.067
μ3 0.224 0.004 0.186 0.497 0.089
μ4 0.349 0.226 0.175 0.169 0.081
Tab.5  Connection degrees of indices in the index and criteria levels
μ1 μ2 μ3 μ4 μ
value −0.086 0.700 −0.1121 0.2965 0.342
grade 3 1 3 2 2
Tab.6  Values of the connection degrees and grades
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