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引用本文:王婷婷,朱伟,李林.不同温度下水流对铜绿微囊藻生长的影响模拟.湖泊科学,2010,22(4):563-568. DOI:10.18307/2010.0413
WANG Tingting,ZHU Wei,LI Lin.Simulation on the hydrodynamic effects of Microcystis aeruginosa in different temperature conditions. J. Lake Sci.2010,22(4):563-568. DOI:10.18307/2010.0413
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不同温度下水流对铜绿微囊藻生长的影响模拟
王婷婷1, 朱伟1,2, 李林1
1.河海大学环境科学与工程学院 南京 210098;2.水资源高效利用与工程安全国家工程中心 南京 210098
摘要:
在蓝藻暴发机理研究中,水动力是一个非常重要的参数,目前多数研究在模拟各种流速环境的同时,未能实现实验过程中恒定的光、温条件控制.本研究采用小型环形槽模拟不同水体流速,在恒定的光、温条件下研究铜绿微囊藻(Mi-crocystis aeruginosa905)在流动水体中的生长情况,并对比了两种典型温度(15℃和25℃)条件下的差异.结果表明,水流使微囊藻生长滞后,改变其对数生长期持续时间和比增长率,直接影响微囊藻的最大生物量;不同流速的水流对微囊藻生长的影响与一定温度范围内的温度条件有关,15℃时,水体流动不利于微囊藻的生长繁殖;而在25℃时,微囊藻细胞生理活性增加,微囊藻对水体流动环境适应能力增强,水体流动更有利于微囊藻的生长繁殖,且流速在15cm/s时微囊藻获得最大生物量.
关键词:  铜绿微囊藻  流速  温度  生物量  比增长率  模拟
DOI:10.18307/2010.0413
分类号:
基金项目:国家自然科学基金项目(50979028)资助
Simulation on the hydrodynamic effects of Microcystis aeruginosa in different temperature conditions
WANG Tingting1, ZHU Wei1,2, LI Lin1
1.School of Environmental Science and Engineering, Hohai University, Nanjing 210098, P. R. China;2.The Efficient Use of Water Resources and Engineering Center for Engineering National Security, Nanjing 210098, P. R. China
Abstract:
Hydrodynamic parameter is an important factor affecting algal bloom,so that many experiments have been carried out to simulate hydrodynamic conditions such as variable flow velocity, but the simulations have not included constant temperature and light. To consider the issues,we studied the effects of variable flow velocity on growth of Microcystia aeruginosa under constant tem-perature and light,and then analyzed the differences between 15℃ and 25℃. The results show that when the upgrowth prolonged, the time of exponential growth, maximum growth ratio and maximum biomass of algae were affected by fluid water. The growth of al-gea was influenced by fluid water which is controlled by temperature at 15 ℃, when the growth of Microcystis was inhibited by fluid water. However,at 25℃;,the growth of Microcystis promoted because the temperature improves adaptation of Microcystis to fluid water and Microcystis obtains optimal growth rate under the condition of 15cm/s.
Key words:  Microcystis aeruginosa  water flow velocity  temperature  biomass  growth rate  simulation
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