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Behavior Study on the Process Biochemical Dynamics for Dominant Algae Species in the Three Gorges Reservoir Region

Author: FengLi
Tutor: LiuXinAn
School: Chongqing University
Course: Physical and chemical
Keywords: Three Gorges Reservoir Area Water bloom. Dominant algae succession Chlorella vulgaris The dominant algae growth dynamics common
CLC: X524
Type: Master's thesis
Year: 2008
Downloads: 95
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Abstract


The Yangtze is China's first large river drainage area of ??1.8 million square kilometers, its ecological status and influence is self-evident. The Three Gorges Reservoir is implementation Following the Gezhouba Hydropower Dam project in the early 1990s, another important hydroelectric project, its construction will bring huge benefits in terms of flood control, power generation, shipping the world. Phytoplankton is one of the components of aquatic ecosystems is a primary producer of water, community structure and quantity greater impact on the aquatic ecosystem succession and development. Reservoir construction and formation process, due to changes in hydrodynamic conditions, phytoplankton species and the number usually changes, and there may even be \So, master the phytoplankton variation has important implications for the reservoir eutrophication prevention and treatment as well as the implementation of ecological management are especially cause \Secondary river Jialing River Three Gorges Reservoir site distribution, sampling and monitoring of phytoplankton, combined with laboratory monitoring, analysis and research investigated the succession of native algae dominant algae in different hydrological state, come to the Three Gorges Reservoir The Jialing synergy of various environmental factors are likely to form a blue-green algae was the dominant algae water bloom pollution. Thus most likely belonging to the Chlorophyta Chlorella vulgaris (Chlorella Vulgaris) is representative of blue-green algae water bloom pollution Algae selected as the research object, through laboratory tests examine nitrogen and phosphorus ordinary ball is formed The algae growth behavior, respectively, calculated half-saturation constant KSP Chlorella vulgaris total phosphorus (TP) and total nitrogen (TN) half-saturation constant KSN. The results show that: KSN gt; gt; KSP, the TP is much greater than the impact of the growth of Chlorella vulgaris TN. Finally, blue-green algae by the Chlorella vulgaris advantage of the system, even seawater algae growth dynamics characteristics, discussed the universality and commonality of the kinetics of Chlorella vulgaris and other blue-green algae, have confirmed these algae very similar growth kinetics and ecological characteristics. Therefore, it is speculated that the growth of Chlorella vulgaris kinetic model can reflect on the whole and on behalf of the reservoir area advantage of blue-green algae growth behavior. Analyzed and summarized the similarity and regularity of the blue-green algae growth model, there is a general consistency preliminary conclusions draw advantage of the Three Gorges Reservoir Area algae growth behavior.

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CLC: > Environmental science, safety science > Environmental pollution and its prevention > Water pollution and its control > Lakes and reservoirs
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