Dianchi The Watershed Pollution Source Database Construction Of Multi-source Data Integration And Integration

Dianchi lake is known as the "plateau pearl", which is the largest lake in southwest China.It is located in the southwestern corner of Kunming city, with the urban water supply, industrial and agricultural water supply,tourism, shipping, aquaculture, climate regulation, and other functions, which plays an important role in national economic and social development of Kunming.This object of study is dianchi lake watershed, including two big urban sections of panlong and wuhua, five suburban counties of xishan and guandu also, area of2920square kilometers.It is the most intensive kunming residents, the most frequent human activities and the most economically developed areas. But over the past20years, with the acceleration of urbanization, the population has increased dramatically, increasing the pressure on ecological environment of the river basin, all kinds of water pollution and discharge pollutants result in the lake extremely eutrophication, dianchi lake now faces the double pressure of water environment pollution and water scarcity, The Yunnan province and Kunming government attach great importance to dianchi lake pollution, Dianchi lake problem is listed as the emphases of Chinese lake environment governing during the "ninth five-year" plan period.This paper is aim at the serious pollution condition, the difficulty of dianchi lake pollution sources management, the unsatisfactoried integration condition of environmental protection information resource, based on the GIS spatial database technology and environmental management knowledge, using the first national census survey results of pollution, put the Dianchi Lake Basin environment information system as the basis, this paper discusses the research based on GIS technology studies the process in establish the pollution sources database of dianchi lake watershed, and on the basis of the research work on paper, by using the data sharing and interoperability for the purpose, put forward and solved in the database construction of the multi-source data integration problems.and the spatial database engine ArcSDE and Geodatabase data model in the way of geographical data management, complete the spatial database logic and physical design, build the dictionary of database, introduce the method of obtain and manage business data and basic geographic, at last expounds the establishment of spatial database.Make a successful attempt and the discussion in GIS in the field of environmental pollution management application, laid a certain technology foundation for deepen GIS in the environmental management application.