太湖富营养化控制机理模拟

建立了一个将三维风生湖流模型,水质模型和富营养化模型耦合的数学模型,该模型不仅可以对太湖的风生湖流,总磷、总氮、COD等水质要素进行模拟,还可以模拟藻类在太湖中的生长和消亡情况以及其随风生湖流迁移的规律;在模型中,还考虑了水温、总氮、总磷和太阳辐射等环境生态因子对藻类生长率的影响,并且将模拟结果与1998年太湖的实测资料进行了对比,结果表明:该模型对风生湖流、总磷、总氮的模拟都是切合实际的,以叶绿素a浓度描述的藻类浓度的模拟值也能较好的拟合实测值。

Ecological Simulation of Eutrophication for Taihu Lake

An integrated mathematical model, coupled with three-dimension wind current model, water quality model and eutrophication model, was developed to simulate wind current and water quality such as TN and TP in Taihu Lake, and the growth and decay of algae and its transportation in wind current as well, The effect of ecological factors such as water temperature, TN, TP and solar radiation on algae growth rate can also be evaluated using this model. Comparing with monitoring data of Taihu Lake in 1998, results showed the calculated wind current, TN, TP and modeled concentration of algae described by chlorophyll a were all fitted well with the measured values.