| 云南洱海桃溪河口净化工程的设计思路及初步净化效果 |
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| 引用本文： | 胡小贞,叶春,金相灿,李宁波,刘滨,张晴波.云南洱海桃溪河口净化工程的设计思路及初步净化效果[J].湖泊科学,2007,19(2):158-162. |
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| 作者姓名： | 胡小贞 叶春 金相灿 李宁波 刘滨 张晴波 |
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| 作者单位： | 中国科学院南京地理与湖泊研究所,南京,210008 |
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| 基金项目： | 中国科学院知识创新工程项目 |
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| 摘 要： | 以太湖上游西苕溪流域为研究对象,通过分布式水文模型HEC-HMS模拟次降雨洪水过程:采用可视化数据存储系统HEC-DSS建立水文气象数据库,利用Geodatabase地理数据库技术集成流域自然属性数据库,通过距离平方倒数法对雨量数据进行空间插值,SCS曲线数法计算水文损失,运动波法计算直接径流与河道洪水演进,选用基流指数退水法模拟流域基流,并对模型中水库模拟部分进行适当修正.经模型校验,模拟结果表明,计算流量与观测流量拟合较好,效率系数大于0.8,洪峰流量误差低于4%,峰现时间误差低于2 h,该模型在土地利用变化对洪水水文要素的影响研究方面有较好的应用前景.
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| 关 键 词： | 水文模型 次洪水过程 模拟 太湖流域 中尺度流域 雨洪水 过程模拟 太湖 西苕溪流域 watershed mesoscale flood events Simulating Taihu Basin region upper River 前景 应用 影响 水文要素 变化 土地利用 时间误差 |
| 收稿时间： | 2006-05-29 |
| 修稿时间： | 2006-08-24 |
River mouth ecotechnology for purification of River Taoxi in Lake Erhai Basin:the design and purification effects |
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| HU Xiaozhen,YE Chun,JIN Xiangcan,LI Ningbo,LIU Bin and ZHANG Qingbo.River mouth ecotechnology for purification of River Taoxi in Lake Erhai Basin:the design and purification effects[J].Journal of Lake Science,2007,19(2):158-162. |
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| Authors: | HU Xiaozhen YE Chun JIN Xiangcan LI Ningbo LIU Bin and ZHANG Qingbo |
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| Institution: | Nanjing Institute of Geography and Limnology, CAS ,Nanjing 210008 ,P. R. China |
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| Abstract: | Flood events in River Xitiaoxi Watershed in the upper region of Taihu Basin were simulated by distribu- ted hydrologic modeling system HEC-HMS.The database of hydrology and meteorology in studied region was set up by visual storage system HEC-DSS.The database of the natural attributes of basin was integrated by the technique of GIS Geo-database.The total storm mean area precipitation was calculated by inverse-distance-squared method. SCS Curve Number Loss Model was selected to compute runoff volumes.Kinematic-wave Model was used to model direct runoff and channel flow.Base flow was modeled by Exponential Recession Model and the reservoir model was improved.After calibration and validation,the simulated flow and observed flow fit so good that the efficiency coef- ficient was more than 0.8,with error of peak flow within 4%,and error of peak flow time within 2 hours,which il- lustrated that HEC-HMS may be applicable area in simulating the impacts of land use change on hydrological re- gimes such as floods. |
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| Keywords: | Hydrologic model flood events simulate Taihu Basin |
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