Building And Application Of Land Use Database On County Scale Based On MAPGIS

Land resource is the most basic natural resource in human lives. With the development of our country's economy, the increase of population, and the improvement of people's living condition, the construct land increases more quickly, the structure of agriculture changes day by day, the speed of present land use becomes faster. It is useful for improving the scientific of reasonable exploitation to master the status of land resources use exactly and the status of update and it can provide exact decision information for land resources sustainable use. So, it is crucial for all the provinces, even countys to master the environment of land resources roundly and currently. Especially in land resources management on county scale, we have to survey land use change every year in order to get the quantity, quality, property, and spatial distribution. But traditional land use adopt manual model, it is inefficient in practice and unseasonably in data updating , and land use profiles are not sure, etc. It is urgent for us to adopt advanced spatial information technology and database technology, to master dynamic change trend of land use exactly, to realize data update rapidly and land use management.The land use database in Dongbao district of the Jingmen city, Hubei province is key project of national investment. The paper bases on the request of land management institution, its research the item area, the database resources come from land use database, rely on technology standard of nation and Hubei province, build database by MAPGIS, and do some research in application. The paper search methods of building database, looking forward to guiding database build and improving building speed and quality. Through the research of database building, we expect to apply the result to daily life, make good service for land resource management and national economic construction, and make full use of database to benefit our society.The paper analyses the theory and method of GIS database. After analyzing the land use data of Dongbao district of the Jingmen city, it designs a right data collecting plan, applies a right technology route. After finishing the vector data which I correct, convert, rejoin, and then we link it to property data. Vector data and property data may collect at the same time, the error just display in edge of the vector, if the vector data is correct; it is unnecessary to check the property data. Then increase the speed of the work and quality. There are rigidly checking need to be performed on data before input and after input in order to guarantee the data quality. After data input there have to searching, inquiring, statistic analyzing and checking report generation, property and map output.The research show that applying the land use database to the land exploitation and consolidation planning, extracting property data and vector data from database, analyzing the factors of land use construction and potential of newly added arable land, outputting map of precedent land use, save a lot of work time. Added to this, land use database on county scale can be widely used in other ways, for instance, cadastre management, adjustment of basic farmland protected area, building decision support system, establish geographical data bank net and so on.