毕业论文-三角湖水叶绿素a时分布特征及与环境因子关系.docVIP

毕业论文：三角湖水体叶绿素a时空分布特征及与环境因子关系 田科 132212101211PAGE PAGE 1学士学位论文论文题目 三角湖水叶绿素a时空分布特征及与环境因子关系(英 文) Temporal and spatial distribution of chlorophyll a in Sanjiao Lake and its relationship with environmental factors学 院 生命科学学院 姓 名 学 号 1 指导教师 2017年 5 月20日 毕业论文：三角湖水体叶绿素a时空分布特征及与环境因子关系 PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT 3三角湖水体叶绿素a时空分布特征及与环境因子关系学生摘要 为了解三角湖富营养化现状，2016年5月—2017年4月，对三角湖水体叶绿素及水质因子进行了采样分析，分析了水体叶绿素a的时空变化特征及其与环境因子的关系，并对湖泊富营养化状况进行了评价，以期三角湖湖泊污染防治及水生态修复提供参考。研究结果表明，叶绿素a含量冬季平均值为54.0μg/l属于富营养化、春季平均值为116.0μg/l属于超富营养化、夏季平均值为107.5μg/l属于超富营养化、秋季平均值为129.0μg/l属于超富营养化。。三角湖水体叶绿素a的变化范围为39.9μg/l~214.5μg/l，平均叶绿素a含量为101.6μg/l。其中叶绿素a含量最高值出现在5月份，最低值出现在1月。水体叶绿素a含量与温度（WT）、电导率（Cond）呈显著正相关，与总磷含量（TP）呈显著相关），与透明度（SD）、TN/TP呈极显著负相关，与氧化还原电位（ORP）、总氮含量（TN）、值等因子相关性不明显。用叶绿素a进行水质评价，三角湖属于富营养—超富营养化水平。关键词三角湖；水体叶绿素a；影响因子；湖泊污染Abstract In order to understand the eutrophication status of Sanjiao Lake, the chlorophyll and water quality factors of Sanjiao Lake were sampled and analyzed from may to April, 2016 the spatio-temporal variation characteristics of chlorophyll a and its relationship with environmental factors were analyzed, and the eutrophication status of lake was evaluated, so as to provide references for lake pollution prevention and water ecological restoration. The results showed that the winter mean value of chlorophyll a was 54.0 μ g / l was eutrophication, the mean value of 116.0 μ g / l was super, and the mean value of in the summer μ g / l was 107.5 μ g / l in summer and 525.0 μ g / l in autumn was super. 。 The variation range of chlorophyll a in trigonal lake was 39.9 μ g / l ~ 214.5 μ g / l, the average content of chlorophyll a was 101.6 μ g / L.. The highest chlorophyll a content appeared in may, the lowest value appeared in January. Chlorophyll a content in water was significantly positively correlated with temperature ( wt ), conductivity ( cond ), and had significant negative correlation with total phosphorus content ( SD