小型人工湖藻类变化特征及主要驱动因子研究
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摘要
小型人工湖由于水域面积狭小、水体循环缓慢等特点,使得进入其中的污染物难以降解,容易引发水体富营养化等水环境恶化问题。为探析小型人工湖泊藻类动态变化特征及主要驱动因子,以郑州大学新校区的眉湖为例,结合现场监测数据分析了水体中藻类及各水质因子的变化特征及其原因,并利用相关分析和主因子分析的结果筛选出影响藻类生长的主要环境因子并建立多元线性回归方程。结果发现,较清洁的北部水体藻类变化的主要驱动因子是悬浮固体有机物、pH值、总氮浓度,而呈营养型的南部水体则为光照强度、COD浓度、总氮浓度。
Due to the narrow water area and slow circulation, small artificial lakes make it difficult to degrade pollutants entering the water and cause problems of deterioration of the water environment such as eutrophication. In order to analyze the dynamic characteristics and main driving factors of algae in small artificial lakes, the Meihu Lake in the campus of Zhengzhou University is taken as an example to analyze the characteristics and causes of changes in algae and water quality factors in combination with monitoring data by using the results of correlation analysis and principal factor analysis to screen out the major environmental factors that affect the growth of algae and establish multiple linear regression equations. The results show that the main driving factors for the change of algae in the relatively clean northern part of the lake have suspended solid organic matter, pH, and total nitrogen, while in the southern part with nutritional status is light intensity, COD, and total nitrogen.
Due to the narrow water area and slow circulation, small artificial lakes make it difficult to degrade pollutants entering the water and cause problems of deterioration of the water environment such as eutrophication. In order to analyze the dynamic characteristics and main driving factors of algae in small artificial lakes, the Meihu Lake in the campus of Zhengzhou University is taken as an example to analyze the characteristics and causes of changes in algae and water quality factors in combination with monitoring data by using the results of correlation analysis and principal factor analysis to screen out the major environmental factors that affect the growth of algae and establish multiple linear regression equations. The results show that the main driving factors for the change of algae in the relatively clean northern part of the lake have suspended solid organic matter, pH, and total nitrogen, while in the southern part with nutritional status is light intensity, COD, and total nitrogen.
引文
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[2] Fernandez C,Caceres E J,Parodi E R.Phytoplankton Development in a Highly Eutrophic man-made Lake From the Pampa plain of Argentina-a functional Approach[J].International Journal of Environmental Research,2014,8(1):1-14.
[3] Luciana D C,Medeiros A,Mattos M,et al.Is the future blue-green or brown?The effects of extreme events on phytoplankton dynamics in a semi-arid man-made lake[J].AQUATIC ECOLOGY,2015,49(3):293-307.
[4] 张洁,俞宙菲,李稳,等.北京四校园人工湖浮游藻类与富营养化特征分析[J].生态科学,2011(2):183-188.
[5] 沈勇.东北地区人工湖淡水藻类和环境因子的调查分析[D].长春:吉林大学,2015.
[6] Cho S,Lim B,Jung J,et al.Factors affecting algal blooms in a man-made lake and prediction using an artificial neural network[J].Measurement:Journal of the International Measurement Confederation,2014,53:224-233.
[7] 杨旭,曾祥亮.基于单因子评价法和污染指数法的郑州大学眉湖水质评价[J].江苏科技信息,2014(5):51-53.
[8] 吴敏,林莉,黄茁.淡水藻类生长的环境影响因子分析——以铜绿微囊藻为例[J].长江科学院院报,2012,29(10):41-47.
[9] 官涤.巢湖西半湖水华暴发的多元驱动因子分析及趋势预测[D].哈尔滨:哈尔滨工业大学,2012.
[10] 刘春光,孙红文,朱琳,等.两种无机盐形成的盐度对淡水藻类生长的影响[J].环境科学学报,2006(1):157-161.