基于综合时空数据模型的包头市郊区土地监测信息系统

Land monitoring information system for Baotou suburbs based on a comprehensive spatial-temporal data model

为了深化多时态地理信息系统 (TGIS)研究 ,建立包头市郊区土地监测信息系统 ,提出了时空地理实体这一新的概念。阐述了决定土地监测信息系统模型设计的数据基础、身份确认原则、时间综合期、时间粒度和查询功能等几个关键因素。以时空地理实体为出发点 ,根据土地监测信息系统的特点将基图修正模型和组合体模型结合起来形成综合时空数据模型。实践证明基于综合时空数据模型建立的包头市郊区土地监测信息系统具有较高的时间效率。

A spatial-temporal geographical entity was proposed for a temporal geographical information system in a land monitoring information system for the suburbs of Baotou. The analysis describes several key factors such as the data base, identity validation rules, the temporal synthesis period, the temporal granularity and the desired query functions. The spatial-temporal geographical entity was combined with the land monitoring information system characteristics to form a comprehensive spatial-temporal data model by combining the base state with a space-time composite. Actual operations have proven the systems powerful query functions, operational efficiency and storage efficiency. The comprehensive data model is an effective geographical information system concept model for land-oriented applications.