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密云水库水质变化趋势研究
摘要： 为模拟近年来密云水库水位不断下降引起的水质变化的问题,开发了三维生态动力学模型来进行密云水库水质模拟,该模型耦合了水质模型WASP和水动力学模型EFDC.首先进行了模型参数率定和验证.在此基础上,研究模拟了4个情景方案(S1,S21,S22和S23).结果表明,密云水库处于低水位时,水质受来水水量和营养物负荷的影响显著.当出现一次大来水量,入库负荷增大,叶绿素a的质量浓度可能在很大区域内都超过10 μg/L的富营养化警戒线.同时,情景S23表明,控制TP负荷可有效降低叶绿素的质量浓度,水库水质能得到有效改善或保持现状. Abstract： In order to simulate changes in the water quality of the Miyun Reservoir due to continuous descent of surface water level,a 3-D ecological hydrodynamic model was developed through coupling the water quality analysis simulation program (WASP) with the environmental fluid dynamics code (EFDC).The model was then calibrated and verified.Four scenarios (S1,S21,S22 and S23) were simulated using the model.Results show that the water quality of the Miyun Reservoir under conditions of low surface water level is apparently affected by different amounts of inflow and different total phosphorus (TP) loadings.The chlorophyll-a concentration might exceed 10 μg/L in many areas of the Miyun Reservoir (This limitative value is seen as a critical value of eutrophication) when large loadings of TP enter due to the amount of inflow increasing.Results of scenario S23 indicate that control of TP loadings can decrease chlorophyll-a concentration effectively,and the water quality of the Miyun Reservoir will improve or retain its status quo. 作 者： 王建平 程声通 贾海峰 Wang Jianping CHENG Shengtong JIA Haifeng 作者单位： 清华大学环境科学与工程系,北京,100084 期 刊： 东南大学学报（英文版） EI Journal： JOURNAL OF SOUTHEAST UNIVERSITY(ENGLISH EDITION) 年，卷(期)： 2005, 21(2) 分类号： X143 关键词： 水质模型 水动力学模型 情景分析 变化趋势 Keywords： water quality model hydrodynamic model scenario analysis changing trends【密云水库水质变化趋势研究】相关文章：
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