| 水质综合评价的模糊可变集合方法 |
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| 引用本文： | 陈守煜,郭瑜.水质综合评价的模糊可变集合方法[J].水资源保护,2005,21(6):19-22. |
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| 作者姓名： | 陈守煜 郭瑜 |
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| 作者单位： | 大连理工大学土木水利学院,辽宁,大连,116024 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助项目（9014102）;水利部科技创新项目（SCXC2005-01） |
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| 摘 要： | 基于立足全局的系统观,应用模糊可变集合,建立水质评价模型,把水质评价由定性转化为定量。该方法能够科学、合理地确定与水质相关的各个研究指标处于级别区间的隶属度、相对隶属函数,并根据指标重要性进行二元比较与量化,从而合理地确定出各个指标的权重。通过实际水质等级的级别特征值计算,对北京永定河水质进行了模糊可变集合评价。评价结果表明了该方法的可应用性。
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| 关 键 词： | 水质评价 模糊可变集合 差异函数 级别特征值 |
| 文章编号： | 1004-6933（2005）06-0019-04 |
| 收稿时间： | 2005-05-09 |
| 修稿时间： | 2005年5月9日 |
Application of variable fuzzy sets method in comprehensive evaluation of water quality |
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| CHEN Shou-yu,GUO Yu.Application of variable fuzzy sets method in comprehensive evaluation of water quality[J].Water Resources Protection,2005,21(6):19-22. |
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| Authors: | CHEN Shou-yu GUO Yu |
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| Affiliation: | School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | Under systematic view, a comprehensive evaluation model for water quality was established based on variable fuzzy sets method, and the water quality evaluation was converted from the qualitative assessment to a quantitative one. The method can scientifically and reasonably determine membership degrees and relative membership functions of water quality indexes at level interval. Weights of indexes can be obtained by binary comparison and quantification based on the importance of indexes. By calculating the characteristic value of each level, water quality of the Yongding River in Beijing was evaluated using the variable fuzzy sets method, which showed that the proposed method was feasible. |
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| Keywords: | water quality evaluation variable fuzzy sets difference function level characteristic values |
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