Research on the management and expression of disaster data

摘要: Natural disasters that frequently occur may cause enormous loss of human lives and damage properties. However, these losses can be reduced effectively by establishing disaster control reduction system. In recent years, system based on 3D GIS are paid more attention. has the ability not only in managing analyzing spatial data as well traditional 2D system, but also processing mass truly expressing visualizing geographical environment. there still some technical difficulties management information effective expression This paper discusses method Based this, this designs a to manage integrated environment according multi-source, multi-scale other features data. Besides that, it describes way several variety The experiment verifies proposed methods have achieved satisfactory result.