THE ESTABLISHMENT OF DIGITAL HIGH RESOLUTION GEODATABASES FOR WEBGIS: FROM DIGITAL CAMPUS TO DIGITAL NATIONAL PARK

摘要

In 1999 right after A1 Gore brought the idea of the Digital Earth, aiming to promote the Digital Earth concept Chinese Culture University (CCU) in Taiwan established the Digital Earth Research Center (DERC) and start building Digital Campus, Digital Hua-Gang project. In the mean time nations and organizations around the world have promoted and involved activities in the fields of global sustainability such as global society dialogue, information networking, and delivering services to citizens. Taipei city government, along with Taiwan government, started establishing GIS database infrastructure work in early 90's and merging into development stream of E-government, E-Taipei project. To establish a geodatabase for a digital community, we faced several problems. This was quite different experience trying to implement the digital community since the different sizes, user needs, query functions and information resolutions from different community. This study compared the components of different community from size of large national park to small campus. To bring E-government idea down to digital community faces the problems of various requirement, mass information distribution and quick data communication response from citizens. The Digital Hua-Gang faces the problem focus on the propagation of the digital earth concept and on its application aspects in ecological, economical, technological, cultural and social studied. We found that to implement digital community, all different communities should focus on converting the mass information into geodatabase and with the help of Geoinformatics techniques we can reach the goal of providing better accurate, 3D visualized geo-information and more real-time communication services to the public. Applications of Geographic Information System (GIS) on environmental monitoring and natural hazard management have been carried out around the surrounding area of Yangmingshan (YMS) National Park and have proved very successful in providing protection to rare animals and plants. Located in the north of Taiwan, Yangmingshan is also a very important place for studying environmental conservation, hazard prevention and sustainable development of natural resources. High resolution digital aerial images and Lidar images are recently available in Taiwan, and Taiwan's remote sensing satellite Formosat-2 also efficiently provides two-meter high-resolution imagery. In order to implement the idea of Digital Earth and to reach the goal of substantial development of natural resources, the aim of this study is to establish a high resolution geodatabase for YMS National Park by using all the available geo-information. Using such massive high resolution images to merge into a geodatabase creates all kinds of problems, such as mass data storage, large image server, and the need for more efficient computer operation functions. In order to handle such mass information and expand future new applications, we have introduced a high performance computing system and used it to establish a high resolution digital national park database. With this new computer system we expect the new applications with high resolution images will fulfil the future application needs.