本论文得到

国家863项目：

“重大行业3S应用示范－中小城市(2003AA135030)”

和

中科院遥感所创新项目：

“基于智能体的虚拟地理环境系统研究（Cx020021）的资助

摘 要

本文研究分析了国内外水环境研究现状，VR_GIS的相关理论与技术，时空数据模型等，鉴于水污染模拟具有很强的时空特性，提出了利用VR_GIS技术进行水污染模拟分析与管理，着重分析了水污染的动态可视化技术，一维、二维稳态水质模型与GIS集成技术，对在VR_GIS中进行时态信息的可视化表达这一问题进行了初步的探讨。

本文在深入分析和了解国内外水质模型以及水质模型与GIS相结合的进展的基础上，初步调研了扬州地区河流污染情况，对其进行了数值模拟。在此基础上，结合VR_GIS先进技术与原理，完全自主开发、建立了水污染可视化模拟系统，并对河流污染动态可视化展示的理论与实际开发进行了研究，本论文着重研究了时空数据库的建立、水质模型与GIS的集成设计、系统的设计与实现这几方面内容。

关键词：水质模型、水污染、VR_GIS、可视化、动态显示、时空数据模型、Java3D、集成

ABSTRACT

This thesis investigated and analyzed the current research status of the water environment, the related theory and technology of VR-GIS,  spatio-temporal data model, etc. In consideration of the simulation of the water pollution, which has spatio-temporal characteristic, the VR-GIS technology can be employed to analyze and manage the simulation of the water pollution. In the thesis, we especially emphasize on analyzing the dynamic visual technology, one-dimension and two- dimension stable water quality models and the GIS integrated technology. Also, we discussed some elementary questions about the visual expression in present VRGIS.

After deeply analyzing the water quality model in China and foreign countries,and  the progress of the integration between the water quality model and the GIS, we surveyed the water pollution in Yangzhou City , Jiangsu Province, China, and carried out a data simulation. Then we combined the advanced technology and theory of VR-GIS, independently designed and built the visual simulation system of the water pollution. The main research work in the thesis is as follows: the buliding of the spatio-temporal data base, the integration approaches between the water quality model and the GIS, and the design and realization of the system.

Key words: water quality model, water pollution, VR_GIS, visualization, dynamic demonstration, space-time data model, Java 3D, integration