森林资源空间数据更新的时空数据模型研究

地理信息系统(GIS)技术可以实现空间数据和属性数据统一存贮、管理和数据更新,但往往缺失时间数据,较难实现历史查询。本文以森林小班数据为例,分析林木自然生长以外数据更新的空间形态变化,使用图论对森林资源小班数据更新的时空信息进行描述,在此基础上构建森林资源更新的时空数据模型,此模型能够方便地进行历史查询分析。

Spatio-temporal data model on updating of forest resource spatial data

Geographic Information System (GIS) technology can achieve the spatial data and attribute data storage,management,and data updates,but lack of time data.It is often difficult to achieve historical inquiries.Taking the forest subcompartments as an example,this paper analyzed the spatial shape changes of data updating outside the natural growth of trees,and described temporal and spatial information of forest resources subcompartment data updated based on graph theory,At last it built the spatio-temporal updated data model to historically inquire and analyze information.