2007•South-to-north Water Transfers and Water Science & TechnologyRequires access

Comprehensive Evaluation on Water Environment Quality in the Wenyu River by Improved TOPSIS

Chang Liu

Abstract

Regional water environment quality assessment becomes an important and basic work in water resources protection. The article briefly introduces the theory and application of TOPSIS. Aiming to improve the existing problems of the uncertainty in determining index weights and relative close method not fully reflecting the good or bad of the objectives in traditional TOPSIS, the article advances to apply entropy weight method and improved relative close method in environment quality assessment and multi-objective decision analysis, which can make the assessment more objective and reasonable. the article use the improved Topsis to evaluate Wenyu River Water Environment Quality.

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Key concepts: TOPSIS, Computer science, Water quality, Entropy (arrow of time), Multiple-criteria decision analysis, Quality (philosophy), Water resources, Environmental economics