老鹳湖水生生物自然保护区水质分析 毕业设计 .doc

本科毕业论文（设计） 题 目：老鹳湖水生生物自然保护区水质分析  老鹳湖水生生物自然保护区水质分析 摘要：受孝感市渔政管理处委托，2014年4月我们对老鹳湖水生动植物自然保护区进行了水质监测，测定pH、溶解氧、BOD5、COD、TN、TP等水质因子，其中pH、溶解氧、BOD5、COD、TN、TP、氯化物（以Cl-计）测定的平均值分别为：7.40、6.27 mg/L、3.14 mg/L、14.2 mg/L、1.16 mg/L、0.08 mg/L、30.24 mg/L。根据渔业水质标准和国家地表水三类标准，采用综合评价指数评价公式评价其水质。结果表明，老鹳湖水生生物自然保护区的水质综合评价指数为0.84，水体受轻度污染，主要污染物为总氮和总磷。本文通过对老鹳湖水环境现状分析，为解决老鹳湖环境问题提供依据。 关键词：老鹳湖；水质分析；水生生物自然保护区 The water quality analysis of the Laoguan Lake aquatic organisms Nature Reserve Abstract: Being entrusted by the Xiaogan Fishery Management Office, we have monitored the water quality of Laoguan Lake aquatic flora and fauna Nature Reserve during April in 2014. we have determined some water quality indexes such as pH, Dissolved Oxygen, Total Nitrogen and so on. And the average values of pH, Dissolved Oxygen, Biochemical Oxygen Demand, Chemical Oxygen Demand, Total Nitrogen, Total Phosphorus , chloride respectively are 7.40mg/L、6.27 mg/L、3.14 mg/L、14.20 mg/L、1.16 mg/L、0.08 mg/L、30.24 mg/L. According to the fishery water quality standards and the third category of national standard of surface water, we have evaluated the water quality of Laoguan Lake by using the evaluation formula of the comprehensive evaluation index. The results show that the comprehensive evaluation index of Laoguan Lake aquatic organisms Nature Reserve is 0.84. The water of Laoguan Lake has been lightly polluted and the major pollutants are Total Nitrogen and Total Phosphorus. The investigation and monitoring in the thesis will enrich the basic information of this protected areas. This article made an analysis on water environment of Laoguan Lake,it provides the basis to solve these environmental problems. Key words: Laoguan Lake;water quality analysis;Aquatic organisms Nature Reserve 目 录 文献综述 1 1前言 5 2 实验材料与方法 5 2.1实验材料 5 2.2水样采集 6 2.3样品各指标的测定方法 8 3 结果与分析 14 3.1 水质监测结果 14 3.2 水质监测结果分析与评价 15 4 小结与讨论 18 参考文献 20 致 谢 21 文献