A Study on Spatio-Temporal Process and Storage in Dynamic Land Management System
动态土地信息系统时空过程及时空数据存储

Temporal GIS and spatio temporal data model are currently research focus in geographical information science(GeoScience). Land cadastral information system is one of the most typical application systems in TGIS. In this paper the spatio temporal process of the land cadastral information system is analyzed. A kind of section fast indexing(SFI) in spatio temporal data model of base state with Amendments(BSA) and a method of storage factors of variable granularity(SFVG) are presented. By importing SFI and SFVG, the inquiring efficiency of system is markedly improved. Then the spatio temporal concept, data structure and the method of implementation for Land cadastral information system are discussed. How to organize data, build topological relations and storage data in database are emphatically discussed. At last, a software package of dynamic land cadastral information system based on above model and methods is introduced. The other important technology used in dynamic land cadastral information system is self developed Spatial Database Engine(SDE). The main functions of the system are simply introduced. The dynamic land cadastral information system is practically used for more than two years in many provinces, which shows that its design is advanced, efficiency high and operation stable.