土地利用数据库的更新与回溯方法

Study on Updating and Backdating Database of Land Use

根据土地利用数据库中的矢量数据和栅格数据的特点,分析了在数字环境下土地利用数据库现势度的内涵及数据库更新方法,着重讨论了矢量数据更新中数据的一致性和完整性问题及历史数据的保存及回溯机制。

According to characteristic of vector data, this paper focuses on the connotation and the measurement of current situation degree, and discussed the key technology of updating and backdating data, and coherence and integrality of data in the numeric environment. The memory and backdating of history data was also discussed.