文档介绍：摘要水质富营养化是全球性的水污染问题,正曰益引起全社会的关注,尤其是作为城市饮用水水源的水库富营养化问题更是严重威胁着城市供水的安全。本文以于桥水库为研究对象,以保障城市安全供水为目标,系统地研究了水库富营养化问题。首先针对水库水质管理不完善的问题,引入了先进的GI$技术,研制开发了相关的水库水质管理软件,并结合于桥水库的具体地形图和水质信息建立了于桥水库水质管理信息系统,实现了水库水质的信息化管理,并为富营养化的预测、预警和防治规划提供了信息基础。其次,藻类恶性增殖作为富营养化的核心体现,同时也直接威胁着城市供水安全,所以本文以藻类为切入点,选择反映藻类数量的叶绿索浓度作为水质富营养化指标和预测预警对象进行研究,先后运用多元非线性回归方法和人工神经网络方法建立了预测模型,分别采用SAS和MATLAB编写了程序进行模型的标定和验证求解,并根据预测的结果结合水库的实际情况制定了相应的分级预警方案,在预警的基础上研究相应的应急防治措施,这些措施包括水库内的藻类削减措施和水厂采取的工艺和药剂方面的应急准备。最后,为了真正实现安全供水,对于桥水库富营养化成因进行了分析, 并对现阶段可以实现的防治措施进行了系统的规划,使用LJngo软件对防治规划进行了优化分析,在保证水质、满足环境容量约束的条件下得到了最优的富营养化防治规划。至此,本文结合于桥水库的实际情况系统地研究了水库富营养化问题, 提出了一套完整的解决方案,实际分析的结果显示该方案切实可行,可以应用于实际。关键词:水库水质富营养化GIS预测预警防治规划优化 Abstract Increasingly catch the attention ofworld,Eutrophication e a global water pollution problem,especially eutrophication of reservoir,which is menacing the security ofcity water ofthisresearch isYuqiao Reservoir and a systemic work on eutrophication isdone under the security target ofwater supply Firstly,according asthelimitation ofwater qualitymanagement,the author develops aintegrated software system based on GIS and applies it toYuqiao reservoir,establishes WaterQuality Management Information System with the base map of topography and monitor data as foundation,which gives information support tothefollowing research. Secondly,as algalblooming isthefocus ofeutrophication and menace the water supply security directly,we choose the concentration ofchlorophyll to predict and give advance warning oneutrophia,which represented thequantity ,two prediction models were constructed using methods such as nonlinear regression analysisand work respectively,and programs were developed on SAS andMATLAB tocalculate theresult. Furthermore,we setup aadvance warning raising method based upon the prediction resultand conduct an investigation inemergency control measure, including algalreducing measures applied inreservoir andbeforehand medicament prepare inwater plant. Finally,we analysis the cause ofe