Gis-based Reservoir Resettlement Management Information System Design And Realization

Reservoir resettlement planning is a complex system engineering issure, which affects surrounding industrial and agricultural activities, people's livings, natural resources, social and economic environment. In the process to evaluate the engineering economic and technological indices of a hydropower project, reservoir resettlement is an innegligible factor. Reservoir resettlement panning involves large amount of sapatial and attributive information, such as, terrain, geology, landuse, indusrial and living facilities, population, resources, transportation, power and communication lines. In the past, this information had been usually crateted, stored and managed in forms of paper maps and tables, which were inefficient, inaccurate and inconvenient in resettlement loss analysis and planning.Geographic Information System (GIS) was borned in the late of 60's in the last century. The advantage of GIS is that it has integrated computer maping system with database management system, and it can manege and operate various spatial and attributive data enfficently, such as, creating, editing, storing , updating data and maintenance, retrieval, spatial analysis and input and output maps and tables in demands. When processing issues of spatial and attributive information in many research fields, it is a useful decision-making tool. The research and development of a GIS-based reservoir resettlement management information system can promote the application of information technology to reservoir resettlement palnning works; at the same time it can improve the efficencicy and rightness of the works.In this paper, firstly, the general work process of reservoir resettlement planning and submerged area model for large and medium-sized hydropower projects have been reviewed. Secondely, according to the requirements and data to be involved, the technical measures and system framework havebeen clarified and designed. A spatial data model, Geodatabase, has been adopted for reservoir resettlement data management and database construction. With the aid of the data model suggeseted in the paper, the spatial and attributive data can be related and stored well in a unified database. The reservoir resettlement database has been built using ArcSDE+Oracle platform, which has realized the fuctions as mass data management, data access of multiple formats and multiple users operation. The development environment and general procedure for ArcEngine component based system development has been explained too. Lastly, using VB.NET and ArcEngine development enviroments, modules of users management, input and output, resettment data retrieval, submerged area analysis, 3D visualization, report forms output and assist tools have been developed in this research.