Guiyang City Gis Research And Applications

With the development of the living standard of the people and of the urbanization, people's need to geography information bloomed splendidly with the inflation of the amount of information. The social management tends to be more complex, with a higher request to city management method. UG1S is a powerful tool when dealing with the challenge of limited living space.This paper explores the Guiyang city geographical information system architecture. It divides the total system structure of GYGIS into three parts and carries on treatise: the foundation geographic information system, professional application system, macroscopic decision support system.The foundation platform of the geographical information system includes four parts: foundation network, city space foundation database, center of the data commutation and standard of the share to exchange to constructed. The construction of the GIS system is based on a unique database management. The foundation database of the city space is the core of the foundation terrace construction. The data commutation center is the carrier of the city geography information system and is the environment of data exchanging and sharing. Meantime it is vital point, exchanging magnanimity data with high-speed, providing apply systems high-speed data access.The objects of GIS platform management are divided into three major type: Public foundation database, professional share database, official database. The public foundation database is the foundation data in the public platform database of the information system of the geography space, it is each profession with comprehensive circulate the system provide a basal share data.This paper focus on flood control decision supporting system and public service system construction. Among them, flood control decision supporting system is a space decision support system(SDSS). In that meaning, GIS's main function are : to free the data management, to forecast and risk programming, to valuate disasters, to relief disasters and plan marine hydraulic engineering construction etc.. And the logic structure of flood control supporting system can be divided into three layers: prop up a layer, the GIS terrace layer and application layer. The public service system mainly investigates on problems how a geography information system convenient inhabitant and develop quality of lives. Which is needed by the development of information-based age and is also one of the purpose and meaning of the construction of Guiyang city geography information system.In a word, the background of the paper is the construction of Guiyang city's geography information system. And it set out from the Guiyang city's actual circumstance, using the target of Guiyang city's geography information system construction and the content of the 1st construction period as clues. The article discusses related technique used in the city geography information system. The paper focus on the flood control decision system and public service of application, researching on the application and construction of geography information and on how to use a new technique in real application to make progress and development.