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Study on the Application of Fuzzy Mathematics in Assessing the Water Quality of Qinghe Reservoir

Water environment system is a large complicated system, there are some uncertainties in assessing water quality, yet fuzzy mathematics is the mathematical method which processes and researchs the fuzzy phenomenon. Based on the theory of fuzzy mathematics and the standard limited value of the appraisal factor, a membership function expression was established, and a computation based on the actual measured data thereafter. The result shows that the water quality of Qinghe Reservoir watershed is poor and Reservoir entrance, Hong Huadian, Tie Jiagou, Zeng Jiatun and YaoPu are belong to standard, which matches the practical situation of water quality.