• 关键词：入湖河口  水生态修复  水质模型  交替方向迭代法

• 基金项目：国家高技术研究发展计划(863)资助项目(No.2005AA6010100401)

• 谭夔
• 中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085

• 陈求稳
• 中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085

• 朱传保
• 水利部水文局, 北京 100053

• 李若男
• 中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085

• 摘要：以滇池大清河河口为对象,根据其水动力特征,建立了二维水环境模型.其中水动力模块采用交替方向迭代法进行数值求解,水质模块中参数的取值通过2006年和2007年现场原位实验和实验室模拟实验获得,并利用2007年的实际监测数据对模型进行率定和验证.运用率定的模型,模拟了生态修复工程实施后大清河入湖控制断面的水质变化情况,以期为治理方案的优化和效果评价提供参考.

• Abstract：Water quality models are important tools to support the optimization of aquatic rehabilitation programs and assess their efficiencies.Basing on the flow conditions of the confluence area between the Daqinghe River and Dianchi Lake,a two-dimensional water quality model was developed.The hydrodynamics module was numerically solved by alternating direction iteration.The parameters for the water quality module were obtained through in-situ and lab experiments that were conducted from 2006 to 2007.The model was calibrated and verified by the observation data in 2007.The developed model was applied to simulating the water quality changes at the downstream cross-section assuming that the designed restoration programs were implemented.According to the simulated results,the efficiency of the restoration program is evaluated and corresponding suggestions are proposed.

• Key words：river-lake confluence  aquatic ecological restoration  water quality model  alternating direction iteration

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