东昌湖水质动态变化与富营养化评价  

Analysis of water quality and eutrophication in the Dongchang Lake

作　　者：王东丽[1] 翟胜[1] 王巨媛[2] 赫刚 张秀新[1] 李正斌[1] 肖栋梁[1] 亓桂秀[1] 

机构地区：[1]聊城大学环境与规划学院,山东聊城252059 [2]聊城大学农学院,山东聊城252059 [3]聊城市环保局,山东聊城252000

出　　处：《生态科学》2013年第1期63-67,共5页Ecological Science

基　　金：国家水体污染控制与治理科技重大专项:典型北方缺水城市湖泊水质水量保障与生境改善技术课题(2009ZX07106-03);聊城大学大学生科技文化创新项目(SRT11071HJ2;SF2012075;SF2012076;SF2012090);国家重点实验室开放基金项目(10501-300);山东省软科学项目(2010RKGA2059)

摘　　要：根据东昌湖水环境监测资料,采用单因子指数、内梅罗指数法及综合营养状态指数法对东昌湖各监测点2004-2011年的水质变化和富营养化状态进行了分析。结果表明,酸碱度(pH)、溶解氧(DO)单因子指数呈波动中上升趋势,但均符合IV类水质标准;化学需氧量(CODCr)、总氮(TN)单因子指数呈波动中下降趋势,总磷(TP)单因子指数呈波动中上升趋势且三者单因子指数均较高,以总氮(TN)对水质影响最大。南关桥、西关桥内梅罗指数呈波动中上升趋势,表明水质趋于恶化。北关桥、东关桥内梅罗指数呈波动中下降趋势,表明水质趋于好转。2004-2010年各监测点处于轻-中度富营养化水平,截至2011年各桥均达到中营养水平。东关桥、北关桥富营养化水平高于西关桥、南关桥。Based on the monitored data,the trend of water quality and eutrophication extent at each monitoring site of Dongchang Lake during 2004-2011 were analyzed by single factor index,Nemerow index method and trophic state index method.The results showed that the single factor index of hydrogen ion concentration（pH） and dissolved oxygen（DO） displayed a fluctuating upward trend,and the water quality was conformed with the water quality standard of Class IV.The single factor index of chemical oxygen demand（CODCr） and total nitrogen（TN） displayed a fluctuating declining trend;total phosphorus（TP） displayed a fluctuating upward trend,and the three single factor indices were higher.Total nitrogen（TN） had the greatest impact on water quality.Nemerow index of Nanguan,Xiguan Bridge showed upward trends,suggesting that the water quality got worse.Nemerow index of Beiguan,Dongguan Bridge showed a declining trend,demonstrating the water quality became better.Eutrophication of each monitoring site was in light-middle eutropher level during 2004-2010,which reached mesotropher level up to 2011.The eutrophication levels of Dongguan and Beiguan Bridge were higher than those of Xiguan and Nanguan Bridge.

关 键 词：东昌湖 水质变化 富营养化评价 

分 类 号：X82[环境科学与工程—环境工程]