Mechanism and Evaluation Method of Water Resources Utilization System ulnerability

doi:10.11849/zrzyxb.20151218

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JOURNAL OF NATURAL RESOURCES ›› 2016, Vol. 31 ›› Issue (9) : 1599-1609. DOI: 10.11849/zrzyxb.20151218

Resource Research Method

Mechanism and Evaluation Method of Water Resources Utilization System ulnerability

PAN Zheng-wei¹, JIN Ju-liang², LIU Xiao-wei³, ZHOU Rong-xing¹

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Abstract

Water resources system vulnerability has gradually become a hot topic in water issues in recent years. Hereinto, integrated vulnerability and vulnerabilities at different levels need to be further explored. Based on the analysis of the formation process of water resources utilization system vulnerability, the model of water resource utilization system vulnerability was built considering total water resources, development and utilization degree of water resources, water-use efficiency, etc. The goal was to further clarify the mechanism of water resources utilization system at different levels. When the contact component coefficient has the distribution characteristic of a wide peak, a bigger error of contact number based on triangular fuzzy number might be obtained. To solve this problem, the characteristics of the difference degree coefficient were further analyzed, and the trapezoidal fuzzy number of difference coefficients was constructed by using the standard threshold as parameters. The assessment model was established by using connection numbers of trapezoidal fuzzy numbers. The model was applied in vulnerability assessment of water resources system in Anhui Province. The results showed: the grade of water resources utilization system vulnerability in Anhui Province had a fluctuation between 3.611 and 2.493 from 2001 to 2014. Compared with the moderate vulnerability in 2001, the water resource utilization system vulnerability in 2014 was reduced significantly to a low level. This method avoids the errors when the value of the contact component coefficient has a wide peak, and can accurately reflect the objective reality of the water resource utilization system.

Key words

Anhui Province / set pair analysis / trapezoidal fuzzy number / vulnerability assessment / water resources utilization system

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PAN Zheng-wei, JIN Ju-liang, LIU Xiao-wei, ZHOU Rong-xing. Mechanism and Evaluation Method of Water Resources Utilization System ulnerability[J]. JOURNAL OF NATURAL RESOURCES, 2016, 31(9): 1599-1609 https://doi.org/10.11849/zrzyxb.20151218

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Funding

National Natural Science Foundation of China, No. 51309004, 71273081 and 51579059; Key Project of Natural Science Research Grant of the Education Department of Anhui Province, No. KJ2016A302. ]