| All levels of Land base Database and thematic Database have been constructing along with the deeper application of GIS technology in the land field, especially the expansion of the digital country project. At the same time, Land application systems were built by all levels of land departments according to their own needs. Now, all kinds of county-level Land Application Systems are being studied and few ones have been built, however, constructing Land Application System is a trend due to needs.Studying and constructing a Land application system that serve county-level land department and enable query and make statistic for land information, and is provided with analysis and assistant decision-making function if extended and also enable communicate with its first superior land department, is the paper's purpose."From inheritance to progress!" For one thing, the paper generalizes and summarizes the study actuality and development of foreign and Chinese Land Information System, especially the paper deeply analyses and summarizes the construction actuality and the problem of county-level Land Application System and find out three main problems. For another, the paper discusses how to face and do some things about the three problems.After deeply realizing the existent problems of county-level Land Application System, the paper focuses on how to study and construct the county-level Land Application System that contacts Tongnan County. Basically, the system design complies with the software engineering. Comparatively, system demand analysis and system network framework configure and the selection of development platform and development environment and development mode are expatiated. System function design and spatial database design and attribute database design and join of spatial database and attribute database also are expounded. Finally, the paper includes the development and demo of partial function. |