摘要
模糊数学方法采用隶属度函数描述环境因子与评价标准之间的相关程度,体现了评价标准界限的模糊性,使评价结果更接近客观实际。论文结合洪泽湖实际污染特征,以溶解氧、高锰酸盐指数、五日生化需氧量、氨氮、总氮、总磷、挥发酚、石油类为评价因子,应用模糊综合评价模型,对2000-2008年洪泽湖水环境质量进行了2级综合评价。结果表明,湖区除2003年是Ⅳ类水质外其余几年均为Ⅴ类水质,污染严重,且随着时间的推移水质继续恶化。洪泽湖主要污染因子为总氮和总磷。各监测点中,老山乡和高良涧镇监测点水质最差。论文分析了影响洪泽湖水质的主要因素,提出了相应的治理对策。
Results of comprehensive evaluation using method of fuzzy mathematical model are more objective than other methods,as the membership functions used by which reflect ambiguity of boundaries of evaluation criteria when describing the relevance between environmental factors and evaluation criteria.Fuzzy comprehensive assessment method was used to evaluate water quality of Hongze Lake based on investigation data from year of 2000 to 2008,taking indicators as evaluation factors including dissolved oxygen,potassium permanganate index,five days BOD,ammonia nitrogen,total nitrogen,total phosphorus,volatile phenol and petroleum.Results showed that water quality of the Lake were at Class V during the research stage except year of 2003 in which it was at Class IV,which implied a serious pollution and gradual deterioration of water quality over time.Main pollution factors of the Lake were total nitrogen and total phosphorus,and the worst water quality were observed at monitoring points of Laoshanxiang and Gaoliangjian.Main factors affecting water quality of the Lake were analyzed and corresponding countermeasures were also proposed.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2012年第10期186-190,共5页
Environmental Science & Technology
基金
江苏省高校哲学社会科学研究基金项目(2010SJB720002)
淮安市科技支撑计划项目(HAS2010003)
2011年江苏省大学生实践创新训练计划项目
淮阴师范学院青年优秀人才支持计划项目(08QNZCK008)
关键词
洪泽湖
水质评价
模糊数学模型
Hongze Lake
water quality assessment
fuzzy mathematical model
