鄱阳湖空间信息演示系统的生成与虚拟可视化应用

鄱阳湖是我国第一淡水湖,生态环境特点显著,整合多源数据建立空间信息系统对提高该地区的科学认识具有重要意义。本文介绍了鄱阳湖空间信息系统及虚拟环境演示系统的设计与建设的核心技术与步骤。整个系统是由一系列专题空间数据库和基础地理信息数据库组成。利用VR-Map软件的三维显示功能及二次开发功能可以快速实现地形的虚拟三维可视化。

Constructing the Poyang Lake Geospatial Information System and Virtual 3D Visualization

As the largest freshwater lake in China, the environment characteristic of Poyang Lake is very special, hence it is very significant to carry out research by means of integrating multi-source spatial data in order to improve our scientific understanding about this area. This article introduced the step of constructing the Poyang Lake spatial information system and virtual environment viewing system. The system consists of a series of theme spatial database and basic GIS database. With the help of the VR-Map software, it is possible to realize the virtual 3D visualization of the terrain. And with the help of the ArcGIS software, it is possible to generate all kinds of theme maps, such as DOM (digital orthodox map), land use maps, population distribution maps and so on. Maps of good quality are very important to the research work. These maps can be updated immediately when the basic data are updated.