风浪条件下太湖蓝藻水华的动力学特征研究

Wind waves are ubiquitous characteristic of large aquatic environments, which are also the most common environmental conditions of phytoplanktonic habitat. Especially in large shallow lakes, wind waves widely affect the physical, chemical, and biological properties of water and directly or indirectly play a crucial role in phytoplankton, which finally affect the structure and function of lake ecosystem. In the future, the effects of wind waves are the research frontier and one of the main direction in lakes. However, because of high cross discipline and scanty research methods, its ecological effects in the process of cyanobacterial harmful algal blooms (CyanoHABs) are rarely explored in lakes. In this project, Lake Taihu as the research object is frequently and complicated influenced by wind waves. Combined field observation with bioassay experiments, this project focuses on the variation of cyanobacteria growth under wind-wave conditions to explore the relationship and mechanism between wind waves and CyanoHABs in Lake Taihu, which could contribute to a better understanding of the formation mechanism of CyanoHABs and provide new theories and decision supports for effective prediction and control of CyanoHABs in Lake Taihu.

风浪在大型自然水体中广泛存在，是藻类生存所必须面对的最为普遍的环境条件。特别在大型浅水湖泊中，风浪广泛影响着水体的物理、化学和生物特性，直接或间接对藻类产生重要影响，并最终影响着湖泊生态系统的结构和功能。风浪对湖泊生态系统的影响是湖沼学研究的热点和主要方向之一，但由于学科交叉大和研究方法缺乏，使得目前关于风浪在蓝藻水华形成过程中的生态环境效应知之甚少。本项目以受风浪频繁且复杂影响的太湖为研究对象，以风浪条件下蓝藻的生长变化为主线，采用原位观测和模拟实验为技术手段，探索风浪与蓝藻水华的关系及作用机理，有助于揭示蓝藻水华暴发的机制，为太湖蓝藻水华的预测和防治提供新的认识和科学依据。

风浪广泛影响着湖泊的物理、化学和生物特性，直接或间接对藻类产生重要影响，并最终影响着湖泊生态系统的结构和功能。本项目以受风浪频繁且复杂影响的太湖为研究对象，采用了野外调查、模拟实验、验证实验以及数理统计为技术手段，阐明了太湖风浪的时空分布和变化特征，定量解析了风浪条件与水体理化特征和生物特征的关系，初步揭示了风浪与蓝藻水华的关系及作用机理，为太湖类似湖泊藻类水华的预测和防治提供新的认识和科学依据。