南水北调东线骆马湖和东平湖鼓藻种群变化与环境因子研究

发布时间：2018-01-05 14:06

本文关键词：南水北调东线骆马湖和东平湖鼓藻种群变化与环境因子研究　出处：《山东大学》2015年硕士论文　论文类型：学位论文

【摘要】：鼓藻类隶属于绿藻门,是绿藻门中一个种类非常丰富的类群。鼓藻类对水环境,尤其是水体理化指标的变化很敏感,是水体水质状况的重要指示生物,在水生生态系统和水环境监测中具有重要作用。骆马湖和东平湖作为南水北调东线工程重要的蓄水湖泊,其水质优劣对东线调水水质具有重要的影响。对骆马湖和东平湖鼓藻类进行调查和研究,丰富了两湖泊鼓藻类的研究,可为今后进一步探讨鼓藻种群演替提供借鉴和参考,同时为鼓藻类在水生态监测中的应用提供了理论依据。本文对骆马湖和东平湖的鼓藻类进行了三年(2011年3月-2013年5月)的连续监测,针对两湖泊鼓藻种群构成、藻细胞密度以及环境因子与鼓藻分布的相关性进行了调查和初步分析,并对两湖泊鼓藻分布特征进行了对比分析。研究结论如下：(1)骆马湖和东平湖共检出鼓藻1科3属16种。骆马湖检出鼓藻3属15种,包括新月藻属3种,鼓藻属9种,角星鼓藻属3种。东平湖检出鼓藻3属7种,包括新月藻属1种,鼓藻属5种,角星鼓藻属1种。鼓藻属为两湖泊鼓藻种类的主要组成部分。(2)骆马湖和东平湖鼓藻种群呈现相似的季节变化规律,夏季和秋季鼓藻检出频率大于其他季节。骆马湖各监测点鼓藻细胞密度变化范围为0～45.8×104cells·L-1,最大值出现在2012年8月S5监测点。东平湖各监测点鼓藻细胞密度变化范围为0-17.4×104 cells·L-1,最大值出现在2012年11月N3监测点。(3)利用典范对应分析(Canonical correspondence analysis,CCA)及皮尔逊相关性分析(Pearson correlation analysis)研究骆马湖和东平湖鼓藻种群结构与环境因子之间的相关性,影响骆马湖鼓藻种群分布的主要环境因子是透明度(Trans)和氨氮(NH4+-N).影响东平湖鼓藻种群分布的主要环境因子是总氮(TN)和pH。(4)骆马湖和东平湖鼓藻在分布特征、环境驱动因子等方面存在一定的差异。东平湖鼓藻检出频率明显低于骆马湖。温度(Temp).氨氮(NH4+-N)和总氮(TN)与骆马湖和东平湖鼓藻种群都具有显著的相关关系,水体pH值与东平湖鼓藻细胞密度具有显著的相关关系,水体透明度(Trans)与骆马湖鼓藻细胞密度有显著的相关关系。(5)骆马湖和东平湖检出的鼓藻中,大部分种类为贫营养水体的指示种,但检出频率低。表明两湖泊水体呈现一定程度的富营养化,不具备多数鼓藻种类生长的适宜条件。
[Abstract]:Drum algae belong to the phylum Chlorophyta and are a very rich species in the phylum Chlorophyta. They are sensitive to the changes of water environment especially the physical and chemical indexes of water body and are important indicators of water quality. Luoma Lake and Dongping Lake are important water storage lakes in the East Route of South-to-North Water transfer Project. The water quality of Luoma Lake and Dongping Lake is investigated and studied, which enriches the study of the two lakes. It can be used for reference and reference in the future. At the same time, it provides a theoretical basis for the application of the algae in the monitoring of water ecology. In this paper, three years of continuous monitoring of the algae in Luoma Lake and Dongping Lake (March 2011 to May 2013) have been carried out. The relationship between the population composition, cell density and environmental factors of the two lakes and the distribution of the algae were investigated and preliminarily analyzed. The distribution characteristics of the algae in the two lakes were compared and analyzed. The results are as follows: 1) in Luoma Lake and Dongping Lake, 16 species in 1 family, 3 genera and 3 genera were detected in Luoma Lake, and 15 species in 3 genera in Luoma Lake. There are 3 species of the genus Crocellaria, 9 species of the genus Drum, 3 species of the genus Corydophyta, 7 species of the 3 genera, including 1 species of the genus Cinceopsis and 5 species of the genus Drum in Dongping Lake. One species of the genus Corydophyta, which is the main component of the two lake species.) the population of Luoma Lake and Dongping Lake shows a similar seasonal variation pattern. The frequency of algae detection in summer and autumn was higher than that in other seasons, and the cell density varied from 45.8 脳 10 ~ 4 cells 路L ~ (-1) to 45.8 脳 10 ~ (4) cells 路L ~ (-1) in Luoma Lake. The maximum value appeared at S5 monitoring site on August 2012. The cell density varied from 0 to 17. 4 脳 10 ~ 4 cells 路L ~ (-1) in Dongping Lake. The maximum value appeared at the N3 monitoring point in November 2012.) canonical correspondence analysis was used for canonical correspondence analysis. CCAs and Pearson correlation analysis were used to study the correlation between the population structure and environmental factors in Luoma Lake and Dongping Lake. The main environmental factors affecting the population distribution of Chlorophyta in Luoma Lake were Transtransparency) and NH _ 4-N _ 4. The main environmental factors affecting the population distribution of Dunping Lake were total nitrogen (TNN) and total nitrogen (TNN). And pH.4) the distribution characteristics of the algae in Luoma Lake and Dongping Lake. There are some differences in environmental driving factors, such as the frequency of detection of Dunping Lake is obviously lower than that of Loma Lake, the temperature of Tempan, NH _ 4-N) and total nitrogen (TNN) are significantly lower than those of Loma Lake. There was a significant correlation between the algal population of Luoma Lake and Dongping Lake. There was a significant correlation between pH and cell density in Dongping Lake. There was a significant correlation between transparency and cell density in Luoma Lake. 5) most of the species were indicators of poor nutrition in Luoma Lake and Dongping Lake. However, the detection frequency was low, which indicated that the water bodies of the two lakes showed eutrophication to a certain extent and did not possess the suitable conditions for the growth of most of the algae species.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X52;X173

【相似文献】