中文摘要：

本文应用VRGIS（Virtual Reality Geographical Information System）技术，建立水库工程水土流失三维可视化动态仿真模型，实现库区的空间信息可视化。以福建省东圳水库为研究对象，建立水土流失区域三维虚拟地理信息系统（3D-VRGIS），生成水土流失现状以及库区生态环境三维场景。并结合水土流失中水淹分析要素与三维空间的数据可视化技术，实现水土流失监测预报及其区域定位监控的可视化处理，为减少水土流失危害，提供可靠的信息资源。

英文摘要：

This paper presented a case study on how to integrate virtual reality （VR） technology with geographical information system （GIS） for simulating the soil erosion process in Dongzhen Reservoir of Fujian Province, China. The research work was divided into three parts： （ 1 ） building a three dimension simulated environment of the whole reservoir area with remotely sensed image SPOT5 and digital elevation model （DEM） driven from contour relief map; （2） modeling the soil erosion process and visualizing the dynamic process on a computer, and （3） predicting the farther evolution of erosion process via changing the affecting factors and visualizing the future scenario of the reservoir area. Taking Dongzhen Reservoir of Fujian Province as a typical case, the environment condition and basin status around the reservoir area are simulated for display based on the VRGIS technology, the 3D simulation scene of soil and water erosion status and dam is built by the project of water and soil conservation simultane- ity. Through this method, combined the integration of flood analysis feature and 3D spatial visual data, using the special function of GIS in spatial data processing and analysis, the unified data and graph of monitoring and predicting system of water and soil erosion is also realized, the scientific characteristic of monitoring and prediction of water and soil erosion is also strengthened, providing a reliable information source for reducing the harm of water and soil erosion.