Role of Irradiance and Temperature on the Algae Bloom of Typical Algae in Three-Gorges Valley
With experiments and model calculations explain the role of irradiance and temperature on why algae bloom break in both spring and summer likely. We studied the possibility of occurrence of the Chlorophyta and Cyanophyta algae bloom in the Three-Gorges Valley. We proposed a model of description on the relationship of temperature and irradiance with Bf. (termination of the biomass) this model clearly shows that the growth optimal light intensity (Iopt) of typical algae gradually increases to be maximum of 4500-5200lx with temperature (t) gradually changes from 25 ℃ to 30 ℃. Iopt of typical algae decreases to 1195lx as temperature up to 30. Asymmetric inverse V ℃ -shape Iopt curve can be well described by Blanchard’s equation. The Bf of Chlorophyta and Cyanophyta have two obvious peak values, one is under 4500-5200lx light intensities, and the other one is 2600lx. The results demonstrate that occurrence of the algae bloom is decided by light and temperature in the Three-Gorges Valley area in spring and summer season.
algae bloom irradiance temperature Three-Gorges Valley
LIU Xinan CHAI Xiaoying ZhAN Min ZHANG Youhe
College of Chemistry and Chemical Engineering,Chongqing University,Chongqing 400044,China
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
1604-1608
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）