Comprehensive evaluation of water resources security based on GRA-ANP model

Water resources security is a complex system composing of natural and social factors,with complex and fuzzy features.In this paper,a network hierarchy division and a weight calculation have been proposed for the main control factors of the water resource safety assessment on the basis of Analytic Network Process (ANP),comprehensively considering four aspects of water resource security,namely,water supply security,social security,economic security,and ecological environment security.In addition,a comprehensive evaluation model of water resources security was established by combining Grey Relation Analysis (GRA).The water resource security of Guizhou province from 2008 to 2015 was then evaluated with this model.The results showed that its security was overall in a relatively stable state,which was between safer and near safe condition,and the safety grade steadily ws on the rising.This result was coincided with the reality,which indicated that the comprehensive evaluation model with the applications of GRA-ANP was reasonable and effective.The evaluation method and results thus can provide a reference for regional assessment of water resources security and the development and utilization of water resources.

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