基于属性识别理论的温榆河水质评价
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摘要
采集沙河水库、马坊、鲁疃闸和辛堡闸等4个监测断面的溶解氧DO、氨氮NH3-N、化学需氧量COD等3个监测指标的数据,结合变异系数法和非决策性模糊集理论确定指标权重,并采用属性识别理论中的灰色接近度来计算监测指标数值与理想监测数值(水质标准)的灰色接近度,通过灰色接近度评价温榆河的水质。结果显示,温榆河各断面水质Ⅴ类情况居多,偶尔出现Ⅳ类水情况。
In this study,we collected data of three monitoring index,i.e.,dissolved oxygen(DO),ammonia nitrogen(HN3-N),chemical oxygen demand(COD),in four main monitoring sections of Wenyu river. We determined the index weight by combining with the method of variation coefficient and the Nondecision Fuzzy Set Theory,and calculated the gray proximity of index value relative to the idealmonitoring data(water standard)by using the grey proximity of Attribute Recognition Theory,therebyevaluating the Wenyu river water quality through the gray proximity. The results showed that the class Ⅴof water quality occurred most in Wenyu river,while the class Ⅳ occasionally did.
In this study,we collected data of three monitoring index,i.e.,dissolved oxygen(DO),ammonia nitrogen(HN3-N),chemical oxygen demand(COD),in four main monitoring sections of Wenyu river. We determined the index weight by combining with the method of variation coefficient and the Nondecision Fuzzy Set Theory,and calculated the gray proximity of index value relative to the idealmonitoring data(water standard)by using the grey proximity of Attribute Recognition Theory,therebyevaluating the Wenyu river water quality through the gray proximity. The results showed that the class Ⅴof water quality occurred most in Wenyu river,while the class Ⅳ occasionally did.
引文
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[2]柯丽娜,王权明,耿亚冬,等.基于非结构性决策模糊集理论的海岛可持续发展能力评价模型及其在长海县的应用[J].海洋湖沼通报,2013(1):159-166.
[3]门宝辉,梁川.基于变异系数权重的水质评价属性识别模型[J].哈尔滨工业大学学报,2005,37(10):1373-1375.
[4] MEN Baohui,LIU Haoyue. Water resource system vulnerability assessment of the Heihe river basin based on pressurestate-response(PSR)model under the changing environment[J]. Water Science&Technology,Water Supply,2018,18(6):1956-1967.
[5]田贵全.大气环境质量评价的判别分析法[J].环境科学研究,1996,9(3):45-48.
[6]童玉娟,罗党.一种改进的属性识别理论模型及应用[J].华北水利水电学院学报,2008,29(2):106-108.
[7]郁达伟,于淼,魏源送,等.1980—2010年温榆河的水环境质量时空演变特征[J].环境科学学报,2012,32(11):2803-2813.