南水北调东线工程实施中调蓄湖泊蓝藻种群的响应机制

项目名称： 南水北调东线工程实施中调蓄湖泊蓝藻种群的响应机制

项目编号： No.51478251

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 其他

项目作者： 裴海燕

作者单位： 山东大学

项目金额： 80万元

中文摘要： 南水北调东线工程对于缓解我国北方地区水资源短缺、实现水资源的合理配置具有深远的意义，其中调水水质问题是南水北调东线工程能否顺利运行和发挥作用的关键。在工程实施过程中，各调蓄湖泊发生蓝藻水华的可能性是迫切需要明确的问题。湖泊中浮游藻类对环境变化非常敏感，掌握浮游藻类的种群分布特征和演替规律，可以更好地改善水质和预防蓝藻水华发生。本课题在南水北调东线工程实施期间，对各调蓄湖泊的水质状况、蓝藻等浮游藻类的种群分布特征进行长期跟踪研究，明确各调蓄湖泊影响蓝藻种群分布的环境因子，结合湖泊水动力学特征、气象条件和蓝藻的相关实验室研究，阐明蓝藻种群对水环境改变的响应机制，并研究各湖泊蓝藻形成水华的能力、条件和规律，为各湖泊的水环境保护及蓝藻水华预防措施提供理论依据和科技支撑。另外，对南水北调东线各湖泊浮游藻类种群特征在通水前后变化的研究，也可为正确评价工程的实施对湖泊水生态环境的影响提供理论依据。

中文关键词： 南水北调工程；蓝藻；种群分布特征；响应机制；水华防控

英文摘要： The South-to-North Water Diversion Project of China is the strategic measure relieving water shortages fundamentally in north China, while the water quality in long-distance water diversion is the key factor to determine the smooth implementation of the project. It is necessary to confirm the possibility of the occurrence of water bloom in the implementation process of the project. Study of phytoplankton community and spatial distribution can improve water quality and avoid the occurrence of water bloom effectively due to the sensitivity of the phytoplankton to water environmental changes. This project intend to conduct a long-term follow-up study during the implementation process, focusing on the water quality, phytoplankton community distribution of regulating lakes in east route of the South-to-North Water Diversion Project. The environmental factors which affect the cyanobacteria population distribution will be determined and the response mechanism to water environmental changes will also be clarified accordingly with the survey and experimental study concerning local hydrometeorology conditions and cyanobacteria growth requirements. Meanwhile, the ability, conditions and rules in water bloom formation of the typical cyanobacteria will be discussed in each regulating lake, which provides advices for aquatic environment protection and prevention for water bloom. In addition, the comparison study for the changes of phytoplankton population distribution during the implementation process of the project may provide theoretical basis for the evaluation of the influence to aquatic environment brought by the implementation of the South-to-North Water Diversion Project.

英文关键词： South-to-North Water Diversion Project;cyanobacteria;population distribution;response mechanism;prevention and control for water bloom