An agro-geological survey and evaluation information system based on GIS

At present, China is carried out the agro-geological survey and evaluation, and build integrated information platform is an important part. Considering the actual requirements, an agro-geological survey and evaluation information system based on GIS (ASEGIS) is discussed in this paper. Firstly, the system architecture with three tiers based on client/ server and browser/server mixed mode is designed; then, the system core functions which included database construction and management, agro-geological & eco-geochemical evaluation, agro-geological & eco-geochemical forecast and early-warning, and web information distribution are elaborated; lastly, the system application in Pearl River Delta area is described. On the whole, the ASEGIS based on GIS technologies had been proved to be effective, especially in mass & heterogeneous spatial and non-spatial data management, agro-geological spatial evaluations and forecast models establishment, and web information sharing.