【作者】 王琦；

【导师】 过仲阳；

【作者基本信息】 华东师范大学 ， 地图学与地理信息系统， 2007， 硕士

【摘要】 崇明岛是中国第三大岛，是上海最具潜在战略意义的发展空间之一。近年来，盐水入侵问题严重困扰崇明岛水资源建设，因此进行盐水入侵研究，建立预警机制防止和减轻海水入侵的危害，具有重要的理论意义和科学价值。根据预警系统的要求以及GIS信息平台的自身需要，针对崇明岛的特点，同时考虑到系统的可扩展性、灵活性以及开发、使用的高效性，除了ArcGIS本身提供的强大功能外，本文设计了针对崇明岛水资源与盐水入侵系统的四个功能模块。这些功能模块主要包括特枯年份盐度场查询子模块、盐水入侵动态模拟子模块、实时径流量监测与盐水入侵预警分析子模块。论文分为五章。第一章绪论，介绍了选题的背景及研究意义，分析了国内外盐水入侵及生态预警地理信息系统方面的研究现状，提出了论文的主要研究内容。第二章探讨了盐水入侵对崇明岛淡水资源的影响，介绍了崇明岛的淡水资源现状、盐水入侵动力学机制、影响盐水入侵的因素，并分析了特枯年份盐水入侵对崇明岛淡水资源的影响。第三章是系统总体设计，主要介绍了系统需求分析、框架设计、功能模块分析和数据库设计等内容。第四章是系统开发及应用，重点介绍了盐水入侵预警模块的开发原理。第六章对研究工作进行了总结，提出了论文的不足和进一步的研究方向。论文的特色及创新之处在于：选择长江河口地区作为开发盐水入侵预警系统的研究区域具有典型性和示范性；传统的盐水入侵研究通常集中在三维数值模拟方面，本论文利用GIS技术，从空间数据的角度出发，对长江河口地区的盐水入侵问题进行了研究和分析；建立了长江河口地区径流量的实时监测模块，在此基础上，开发了研究区盐水入侵的预警系统。更多还原

【Abstract】 As the third largest island in china, Chongming Island is one of the most potential developing spaces of Shanghai. In recent years, saltwater intrusion greatly interfaces the construction of water resources. Therefore, it is of great academic and science significance to carry on the research on saltwater intrusion and set up the early warning mechanism so as to prevent and alleviate the harm of it.Considering the scalability, agility of system and the high-efficiency in developing and using, this thesis advances four function modules for the system, according to the demand of early warning system and the GIS information platform, as well as the characteristic of Chongming Island. These function modules mostly include salinity field query of special dry year, dynamic of saltwater intrusion, web-based real time monitoring and analyzing of runoff.The thesis consists of five chapters. Chapter 1 is introduction. The background of title selection and significance of the research are introduced. This chapter presents the main contents of the research. Chapter 2 discusses the influence of the saltwater intrusion towards the water resource of Chongming Island. The current situation of water resource, dynamic mechanism of saltwater intrusion and the factors affecting the saltwater intrusion are introduced, besides, the influence of the saltwater intrusion towards the water resource of Chongming Island in special dry year is presented. Chapter 3 illustrates the system overall design. System requirement analysis, system development platform, system models and system database designing are introduced. Chapter 4 discusses the development and application of system, mainly introduces the principle of saltwater intrusion early warning module. Chapter 5 concludes the thesis, summarizes the including insufficient aspects and brings forward further research.The innovative aspects of this thesis are as follows: first, choosing Yangtze River estuary as the research area shows great representation and demonstration. Second, traditional research on saltwater intrusion mainly focuses on the aspects of three dimension numerical simulation, but this thesis focuses more on GIS technology from the angle of special data. Third, the web-based real time monitoring module is set up, and the on the basis of that, the early warning system is developed.更多还原