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王冼民,翟淑华,张红举,胡维平,李钦钦,韩涛.基于水质改善目标的太湖适宜换水周期分析.湖泊科学,2017,29(1):9-21. DOI:10.18307/2017.0102
WANG Xianmin,ZHAI Shuhua,ZHANG Hongju,HU Weiping,LI Qinqin,HAN Tao.Research on appropriate hydraulic retention time on basis of water quality improvement of Lake Taihu. J. Lake Sci.2017,29(1):9-21. DOI:10.18307/2017.0102
基于水质改善目标的太湖适宜换水周期分析
Research on appropriate hydraulic retention time on basis of water quality improvement of Lake Taihu
投稿时间:2016-03-09  修订日期:2016-06-17
DOI:10.18307/2017.0102
中文关键词: 换水周期  EcoTaihu模型  太湖  营养物质循环  富营养化
Keywords: Retention time  EcoTaihu Model  Lake Taihu  nutrients flow  eutrophication
基金项目:国家自然科学基金项目(51409049)资助.
作者单位
王冼民 广东海洋大学农学院资源与环境系, 湛江 524088 
翟淑华 水利部太湖流域管理局水保局, 上海 200434 
张红举 水利部太湖流域管理局水保局, 上海 200434 
胡维平 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008 
李钦钦 中国科学院大学, 北京 100049 
韩涛 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008 
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中文摘要:
      准确估算换水周期对于研究湖泊水体化学、生物变化以及污染物迁移、扩散、转化有着重要意义,换水周期是湖泊的一个重要环境参数.根据2010年实测水文、气象和环湖水量、水质条件,建立3组情景模式:第1组为实况方案,第2组是环湖水量倍比缩放方案,第3组为望虞河水量倍比缩放方案.采用EcoTaihu模型模拟3组情景模式下太湖及各湖区营养盐状况,并根据实测结果对模型进行校验.模型计算结果表明:在2010年太湖水文、气象条件下,150~160 d换水周期条件下太湖氮、磷浓度最低,即太湖适宜换水周期为150~160 d.
Abstract:
      Hydrolic retention time in an aquatic environment of lake water has long been of interest to biological limnologists because it is very important for determining lacustrine ecosystem health and sensitive to pollution threats. To evaluate the retention time of Lake Taihu, three scenarios are set up according to the measured data of hydrological, meteorological, boundary conditions of water quantity and quality around the lake in 2010, in which the first is the real scheme, the second is the inflow flux multiplier scheme around the lake, and the last is Wangyu River inflow flux multiplier scheme. EcoTaihu Model is adopted to simulate the nutrients conditions in Lake Taihu and its subzones. The results show that under the hydrological, meteorological and the boundary conditions in 2010, an appropriate hydraulic retention time of Lake Taihu is between 150 days and 160 days.
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