| 太湖湖体总氮平衡及水质可控目标 |
| |
| 引用本文： | 胡开明,逄勇,王华.太湖湖体总氮平衡及水质可控目标[J].水科学进展,2012,23(4):555-562. |
| |
| 作者姓名： | 胡开明 逄勇 王华 |
| |
| 作者单位： | 1.河海大学环境学院, 江苏南京 210098; |
| |
| 基金项目： | 国家水体污染控制与治理科技重大专项(2008ZX07101-001-02);国家自然科学基金资助项目(51179053)~~ |
| |
| 摘 要： | 通过对2007~2010年环太湖水文巡测及降水调查,进行了湖体总氮平衡分析,在充分调查现有与规划的各类型污染源总量控制工程措施的基础上,量化出具有空间分布的流域总氮污染削减率,利用构建的太湖流域及湖体水环境数学模型模拟污染削减后的太湖湖体总氮浓度场,并提出水质可控目标。结果表明:太湖出入水量共127.8亿 m3,其中通过降水进入太湖的水量为24.9亿 m3,占入湖总水量的19.5%;全年总氮收支量达到4.47万t,其中通过干湿沉降进入太湖的总氮量为0.70万t,占入湖总通量的15.5%,可见干湿沉降进入太湖的污染物不容忽视,其变化趋势与太湖地区降水特征相关性较好。同时通过模型推算,定出2015年太湖湖体不同功能区总氮的可控目标,整个湖体平均值约为2.3 mg/L,为太湖总量控制提供科学依据。
|
| 关 键 词： | 总氮平衡 可控目标 入湖通量 干湿沉降 太湖 |
| 收稿时间： | 2011-07-27 |
On the total nitrogen balance and water quality controllable target in Taihu Lake |
| |
| HU Kai-ming
,
PANG Yong
,
WANG Hua.On the total nitrogen balance and water quality controllable target in Taihu Lake[J].Advances in Water Science,2012,23(4):555-562. |
| |
| Authors: | HU Kai-ming PANG Yong WANG Hua |
| |
| Institution: | 1.College of Environment, Hohai University, Nanjing 210098, China;2.Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, Hohai University, Nanjing 210098, China |
| |
| Abstract: | The analysis of total nitrogen balance in Taihu Lake is conducted using 2007-2010 patrol hydrometric and precipitation data.An investigation is carried out on the existing and planned engineering measures for controlling the total amount of pollutants entering Taihu Lake from multiple sources.Based on both analysis and investigation,a spatial and temporal reduction plan for total nitrogen loading from the Taihu Lake basin is proposed.A mathematical model for simulating lake water environmental problems is developed.The distribution of total nitrogen concentration in the lake is obtained using the model after the implementation of the engineering measures,and a controllable target is thus proposed.The result shows that the total volume of inflow and outflow in Taihu Lake reaches a value of 127.8×108 m3 including 24.9×108 m3 of precipitation that accounts for 19.5% of the total inflow.The annual exchange of total nitrogen loads is 4.47×104 t including 0.07×104 t of wet and dry deposition that can account for 15.5% of the total nitrogen loads.Thus,the nitrogen contribution from wet and dry deposition is significant and non-neglectable.The variation of wet and dry deposition is correlated well with precipitation.Using the simulation result of various water functional areas in the Taihu Lake basin,an average nitrogen value of 2.3 mg/L is proposed as the water quality controllable target for 2015 in the basin.The study provides the technical support and the scientific basis to water pollution control in Taihu Lake. |
| |
| Keywords: | total nitrogen balance controllable target flux of lake inflow wet and dry deposition Taihu Lake |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《水科学进展》浏览原始摘要信息 |
| 点击此处可从《水科学进展》下载免费的PDF全文 |
|
