Abstract
Abstract. With the rapid development of computer technology and geographic information system (GIS), three-dimensional (3D) data are becoming an important aspect of GIS. It can provide more information than traditional two-dimensional (2D) surveying and mapping data. It plays vital important role in city building and management. In this paper, 3D city modeling data of different type are collected, including til t 3D dataata, building model data, BIM data and underground data. Then database construction is completed by using the distributed database method, which can greatly improve the efficiency of data access and display. Furthermore, these data are processed and published as standard data services. Then a system is developed to display these data integrated with digital elevation model (DEM) data and remote sensing image data. It can provide data and technology support for the management of various natural resources. In the future, there will be further optimization of this system. We will continue to promote the application of these data to serve the government and the people. We also hope more and more data can be integrated into this system.
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