文章摘要
李 霞,于 淼,林 欣,王 蕊,石宇亭,孙 玥.基于微宇宙试验的不同营养级景观湖泊营养盐变化的研究[J].西南民族大学自然科学版,2018,44(1):40-51
基于微宇宙试验的不同营养级景观湖泊营养盐变化的研究
Study on the changes of nutrients of Landscape Lakes based on microcosm experiment
投稿时间:2017-06-07  修订日期:2017-12-25
中文关键词: 景观湖泊  富营养化  藻类  营养级
英文关键词: Landscape lake  Eutrophication  Algae  Trophic level
基金项目:基于三级营养级的景观湖泊富营养化机理及模型研究
作者单位E-mail
李 霞 天津理工大学 tdlixia@126.com 
于 淼 天津理工大学 565892375@qq.com 
林 欣 天津理工大学  
王 蕊 天津理工大学  
石宇亭 天津理工大学 634479092@qq.com 
孙 玥 天津理工大学  
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中文摘要:
      景观湖泊作为景观和水生态功能的双重载体,已成为城市基础设施改进与升级的重要组成部分。然而,其具有流速缓慢、封闭或半封闭、自净能力差、易被污染等特征,使富营养化问题日益严重。以景观湖泊为研究对象设计微宇宙试验系统,通过对水中营养级的控制及各水质指标的测定对比,来研究水体富营养化的机理。首先,设计水族箱尺寸、系统规模以及光照、循环充氧、温控等系统,并基于微宇宙营养级配置、生态平衡周期等分别设计原水试验和配水试验;其次,向系统中投放杂食性鱼类、浮游动物等来模拟景观水体中的生物种群结构,测定与分析水体中的温度、pH、浊度、溶解氧、氮元素、磷元素、叶绿素a之间的关系及趋势变化。结论表明:一级营养级微宇宙系统控制亚硝态氮、硝态氮、磷酸盐、总磷的效果好,削减总氮、总磷和磷酸盐的能力强,两级营养级微宇宙系统控制浊度、叶绿素a的效果较好,三级营养级微宇宙系统控制浊度、氨氮、总氮的效果好,削减亚硝态氮、硝态氮的能力强,pH稳定性好。最后,基于数据分析提出富营养化湖泊控制的建议和措施,促进水体的良性可持续发展。
英文摘要:
      Landscape lake has become an important part of the urban infrastructure improvements and promotion, as a dual vector of landscape and water ecological function. However, it has the characteristics of current velocity slow, closed or semi-closed, poor self-purification capacity, easy to be polluted and so on, leading to more and more serious eutrophication. This paper designed the microcosmic experimental system on landscape lake as the research object, to study the mechanism of water eutrophication through the control of water nutrition level and the monitoring of water quality indicators. Firstly, aquarium size, system scale, solar radiation, cyclic oxygenation and temperature control are determinated, and the original water experiment and artificial water experiment are designed based on micro-cosmic trophic level allocation and ecological equilibrium cycle. Secondly, feeding omnivorous fish and zooplankton into the system to simulate the biological population structure in landscape water, the relationship and trend of Chlorophyll a, Nitrogen, Phosphorus, Temperature, pH, Turbidity and Dissolved Oxygen in water are analyzed and monitored. The results showed that the control effect of a trophic level micro cosmos system on nitrite nitrogen, nitrate nitrogen,total nitrogen,total phosphorus and phosphate was higher, which has high capacity to reduce total nitrogen, total phosphorus and phosphate. And got a better control effect on two trophic level micro cosmos system on chlorophyll a and turbidity .The control effect of three trophic level micro cosmos system on total nitrogen, ammonia nitrogen, turbidity was good, and got a better reduction ability of nitrite nitrogen and stability of pH. Finally, based on data analysis, the study proposed suggestions and measures for eutrophication lake control, to promote the healthy and sustainable development of water bodies.
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