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密云水庫水質(zhì)變化趨勢研究
摘要： 為模擬近年來密云水庫水位不斷下降引起的水質(zhì)變化的問題,開發(fā)了三維生態(tài)動力學模型來進行密云水庫水質(zhì)模擬,該模型耦合了水質(zhì)模型WASP和水動力學模型EFDC.首先進行了模型參數(shù)率定和驗證.在此基礎(chǔ)上,研究模擬了4個情景方案(S1,S21,S22和S23).結(jié)果表明,密云水庫處于低水位時,水質(zhì)受來水水量和營養(yǎng)物負荷的影響顯著.當出現(xiàn)一次大來水量,入庫負荷增大,葉綠素a的質(zhì)量濃度可能在很大區(qū)域內(nèi)都超過10 μg/L的富營養(yǎng)化警戒線.同時,情景S23表明,控制TP負荷可有效降低葉綠素的質(zhì)量濃度,水庫水質(zhì)能得到有效改善或保持現(xiàn)狀. 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 程聲通 賈海峰 Wang Jianping CHENG Shengtong JIA Haifeng 作者單位： 清華大學環(huán)境科學與工程系,北京,100084 期 刊： 東南大學學報（英文版） EI Journal： JOURNAL OF SOUTHEAST UNIVERSITY(ENGLISH EDITION) 年，卷(期)： 2005, 21(2) 分類號： X143 關(guān)鍵詞： 水質(zhì)模型 水動力學模型 情景分析 變化趨勢 Keywords： water quality model hydrodynamic model scenario analysis changing trends【密云水庫水質(zhì)變化趨勢研究】相關(guān)文章：
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