基于多级模糊理论的湖泊水体和底泥质量评价

目的]基于多级模糊理论,评价乌梁素海水体和底泥所面临的污染程度。方法]在实测数据和调查数据的基础上,采用多级模糊评价理论,选取具有代表性的6个点位对乌梁素海水体和底泥分别进行评价。结果]乌梁素海水体水质空间分布特征表现为距离排污口较近的点位水质很差,由北向南随着水体的流动方向,水质污染等级逐渐降低;乌梁素海底泥除水体出口位置附近的点位为Ⅳ级外,其他点位均达到Ⅴ级。乌梁素海水体和底泥的评价结果表明,乌梁素海污染已十分严重,富营养化进程不断加剧,治理和修复乌梁素海已迫在眉睫。结论]该研究为乌梁素海污染的治理提供了理论参考。

Quality Evaluation of Lake Water and Sediment Based on Multilevel Fuzzy Theory

Objective] The study aimed to assess the pollution of water and sediment in Wuliangsuhai Lake based on multilevel fuzzy theory.Method] On the basis of measured and survey data,the quality of water and sediment in six representative sites of Wuliangsuhai Lake was evaluated by using multilevel fuzzy theory.Result] Water quality of Wuliangsuhai Lake was different in space,that is,the water quality close to outfalls was poor,but the water quality became better from north to south with the direction of water flow.Sediment near the water exit was at Grade Ⅳ,while it was at GradeⅤ in other sites.From the evaluation results of water and sediment,we could see that pollution of Wuliangsuhai Lake was very serious,and eutrophication process was aggravating,so it is extremely urgent to control and restore Wuliangsuhai Lake.Conclusion] The research could provide scientific references for controlling the pollution of Wuliangsuhai Lake.