| 环境因子对香溪河春季藻类生长影响的模拟实验 |
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| 引用本文： | 龙天渝,周鹏瑞,吴磊.环境因子对香溪河春季藻类生长影响的模拟实验[J].中国环境科学,2011,31(2):327-331. |
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| 作者姓名： | 龙天渝 周鹏瑞 吴磊 |
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| 作者单位： | 重庆大学三峡库区生态环境教育部重点实验室,重庆,400045 |
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| 基金项目： | 国家水体污染与治理科技重大专项 |
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| 摘 要： | 2010年3~5月间,分3批次采集了香溪河水样,以水体营养盐浓度、水温、光强和流速为环境因子,以Chla比增长率为评价指标,在室内进行L9(34)的正交藻类培养实验,研究了环境因子对春季优势硅藻生长的影响.结果表明,在实验所设定的水平范围内,水体营养盐浓度总氮(TN)为3.5mg/L、总磷(TP)为0.3mg/L,水温20℃,光强为4700lx以及流速为0.1m/s时,最适宜藻类生长.4因子对藻类生长影响大小依次为光强、流速、水温、营养盐浓度.流速在0.05m/s和0.1m/s的情况下,藻类生长率明显高于静水.当TN<1.5mg/L,TP<0.1mg/L时,增加TN、TP浓度可显著促进藻类生长;当TN、TP浓度分别达到3.5mg/L、0.3mg/L时, N、P浓度的增加对藻类生长影响甚微.
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| 关 键 词： | 香溪河 正交实验 比增长率 适宜生长条件 |
| 收稿时间： | 2010-07-04; |
The simulating experiment for the impacts of environmental factors on Spring algae growth in Xiangxi River |
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| LONG Tian-yu,ZHOU Peng-rui,WU Lei.The simulating experiment for the impacts of environmental factors on Spring algae growth in Xiangxi River[J].China Environmental Science,2011,31(2):327-331. |
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| Authors: | LONG Tian-yu ZHOU Peng-rui WU Lei |
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| Institution: | LONG Tian-yu,ZHOU Peng-rui,WU Lei(Key Laboratory of the Three Gorges Region's Eco-Environment,Ministry of Education,Chongqing University,Chongqing 400045,China). |
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| Abstract: | Three batches of water samples were collected from Xiangxi River between March to May 2010,and the L9(34) orthogonal experiments of algae growth were conducted in laboratory.Nutrient concentrations in water,water temperature,light intensity and water flow velocity were selected as environmental factors,and the growth rate of Chla was taken as evaluation index.The effects of environmental factors on the growth of preponderant diatoms in spring were studied.The optimal conditions for algal growth under the co... |
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| Keywords: | Xiangxi River orthogonal experiment specific growth rate optimal growth conditions |
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