河道型水库支流库湾富营养化数值模拟研究
Simulation of Eutrophication in Branch of Channel type Reservoirs
作者：王玲玲(河海大学 水电学院,江苏 南京 210098)；戴会超(河海大学 水电学院,江苏 南京 210098)；蔡庆华(中科院 武汉水生生物研究所,湖北 武汉 430072)
Author：(College of Water Conservancy and Hydropower Eng., Hohai Univ., Nanjing 210098, China)；(College of Water Conservancy and Hydropower Eng., Hohai Univ., Nanjing 210098, China)；(Inst. of Hydrobiology, the Chinese Academy of Sci., Wuhan 430072,China)
收稿日期：2007-11-30 年卷（期）页码：2009,41(2):18-23
期刊名称：工程科学与技术
Journal Name：Advanced Engineering Sciences
关键字：河道型水库；富营养化；水库调度；模型开发
Key words：channel-type reservoirs;eutrophication;reservoir operation;developing model
基金项目：国家科技支撑计划资助项目(2008BAB29B09);自然科学基金资助项目(50779028);江苏省“青蓝工程”资助项目
中文摘要
从理论上分析了三峡水库水体富营养化产生的机理，以香溪河支流为例，开发了一维长河道水体水动力及富营养化模型，采用该模型研究了水动力条件对藻类初级生长率的影响，模拟并预测了2005年春季香溪河沿程TP、TN、chl-a等理化因子在时间及空间域中的分布与演化规律，结果与实测值吻合良好，TP、TN的吻合程度优于chl-a。模拟成果表明在该计算时段内，库湾chl-a浓度值有较大幅度的升高趋势，表明该时段藻华爆发的可能性较大，数值模型可以较准确地捕捉到这一信息。所开发模型还可以用于类似的河道型水库水体富营养化状况的模拟预测中。
英文摘要
In the study, the mechanism of Eutrophication generation in Three Gorges Reservoir is theoretically analyzed. One dimensional hydraulic and eutrophication model based on the Xiangxi branch is developed and the influence of the hydrodynamic condition on algae primary birthrate based on the model is researched.Comparisons of the factors of TP、TN、chla along the branch in the spring,2005,with experimental data indicate that the simulated results behave well,especially, the results of TP、TN were better than those of chla.Much higher chla in the reservoir anabranch than in the upstream shows the evidence of algae breaking out.The developed model can be used to predict the distribution of Eutrophication in similar Channel Type Reservoirs.
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