【作者】 李丹颖；

【导师】 宋星原； 刘昌明；

【作者基本信息】 武汉大学 ， 水文学及水资源， 2005， 硕士

【副题名】以湖北省白莲河流域为例

【摘要】 本论文结合国家自然科学基金项目“基于暴雨数值模拟的流域洪水预报模型与方法研究”(项目编号50379040),主要进行了陆面水文模型VIC(Variable Infiltration Capacity)研究,并将其与天气发生器的集成,应用于湖北省白莲河流域。 本研究以陆面水文模型VIC为基础,结合1:100万全国DEM数据(1km~2网格分辨率)、土地利用、植被和土壤分类等地理信息,确定白莲河流域内运行VIC模型所需参数。自主开发了汇流模块,将其与VIC模型相耦合,建立了白莲河流域VIC陆面水文模型;结合水文资料,将模型模拟的日流量过程与相应水文站实测日流量资料进行比较,进行了参数率定和流量过程的模拟。在此基础上,将WXGEN天气发生器与该模型相集成,利用WXGEN天气发生器生成的随机气象资料,对白莲河水库以上的东西两支流(分别以落令河站、英山站为控制站)的流量过程,以及白莲河水库的入库过程进行了模拟。全文内容主要有: (1)第一章是绪论,综述了流域水文模型,特别是分布式流域水文模型和陆面地表过程模型的发展历程、研究应用现状及存在的主要问题以及未来的研究方向; (2)第二章是GIS技术在水文模型上的应用,介绍了ArcView GIS软件,重点介绍了AvSwat模块,并应用该模块对相应的GIS数据进行了处理;对白莲河流域进行了流域边界的提取和子流域划分。 (3)第三章是WXGEN天气发生器及其应用,综述了天气发生器的研究概况,介绍了WXGEN天气发生器模型,并将该模型成功的应用于白莲河流域; (4)第四章是VIC陆面水文模型理论与方法,介绍了基于水文学机理的陆面过程模型VIC的发展与机理; (5)第五章是白莲河流域VIC陆面水文模型及数值模拟,介绍了模型的数据准备和数值模拟、运行步骤,汇流模块,以及WXGEN天气发生器与白莲河流域VIC陆面水文模型的集成; (6)第六章是结论与建议,主要对全文的主要研究工作与创新进行了总结回顾,并指出了研究中尚存在的问题及对未来工作的展望。 综上所述,本论文采用气象与水文水资源学科交叉方式,引进气象要素随机模拟与水文模型相结合的新方法;这对于提高暴雨洪水预见期和无观测资料或观测资料缺乏流域的水文预测等方面是一个很有意义的探索。更多还原

【Abstract】 This paper, which was the part of the project of National Natural Science Foundation of China "Method and Research of the Watershed Flood-forecast Model based on Numerical Simulation of Rainstorm" (Program No: 50379040), made research on VIC (Variable Infiltration Capacity) land surface hydrological model, and coupled with WXGEN weather generator, VIC model was applied to Bailian river basin in Hubei province.Based on VIC (Variable Infiltration Capacity) large-scale land surface hydrological model and the geographical information and hydrologic data including vegetation type, land-use, and soil type, etc, VIC land surface hydrological model of Bailian river basin coupled with the self-developed routing generation model, was established. The parameters of VIC model were optimized and the streamflow of Bailian river basin was simulated respectively, therefore, the rationality and applicability of VIC model was tested. Furthermore, the WXGEN weather generator was integrated with VIC model, and based on the meteorological data which was generated from WXGEN weather generator, this coupled model get succeed in the random simulation of streamflow of Luolinghe station, Yingshan station and inflow of Bailian river basin.The main works and conclusions were summarized as follows:(l)Chapter 1 not only summarized the development and application of Distributed Hydrological Model and Land Surface Process Model, but also pointed out the mainly unresolved problems.(2)The application of GIS technology to hydrologic model was introduced in chapter 2, which firstly gave a presentation to Arc View GIS, especially to AvSwat part. Bailian river basin was subdivided into several sub basins, at the same time, the corresponding GIS data was processed.(3)WXGEN weather generator was the key research content in chapter 3, which firstly summarized the research and application of weather generator; and then introduced the principles of WXGEN weather generator. Finally, a case study by the suggested model was successfully presented on Bailian river basin.(4)The theories and methods of VIC land surface hydrological model were the key content in chapter 4, which introduced the development and mechanism of VIC land surface processes model which was based on the hydrological mechanism.(5)Chapter 5 presented VIC land surface hydrological model of Bailian river basin. The preparation for data, numerical simulation, run-steps, routing generation model, aswell as the integration of WXGEN weather generator and VIC model of Bailian river basin were introduced detail by detail.(6)Chapter 6 consisted of conclusions and suggestions. On the one hand, the main contents and innovations of the whole study were reviewed; on the other hand, the unresolved problems in this paper as well as the future research were pointed out.In conclusion, an intercrossing way of meteorology with water resources and hydrology was adopted in this paper. By introducing the new forecasting methods of meteorological elements, the forecasting accuracy could be improved, the forecasting period could be extended, the ability of flood forecast could be enhanced and the flood disaster could be alleviated in our country, furthermore, the social economic sustainable development could be realized.更多还原