【摘要】 森林资源档案管理系统主要对森林资源的档案信息进行管理,是林业信息管理中的重要内容。森林资源档案数据具有易变性和时效性,森林资源档案数据的及时更新将有助于林业主管部门对森林资源状况的掌握。本文综合了时空数据模型中基态修正模型、生命周期模型和面向对象模型的特点,建立了增量存储数据更新模型,提出了增量存储数据更新方法,并以甘肃省小陇山林业局党川林场的部分数据为基础,利用增量存储数据更新方法,对数据更新实现过程进行了探讨。更多还原

【Abstract】 Forest Resources Inventory Management System,which mostly deals with the inventory information in forest resources,is one important part of the forest information management.The timely update of the forest resources inventory data,which is changeable and time-limited,would help the forestry directors to understand the forestry resources status.In the paper,the data update model of variety storage and its method were put forward,according to the analysis of Space-Time Data Model,including Base State with Amendments Model,Record-Life Cycle Model,and Object-Oriented Spatial-Temporal Data Model.Moreover,the data update realization process using the data update method of variety storage was discussed,taking part of data in Dangchuan Forestry Centre,Xiaolongshan Forestry Bureau,Gansu Province as the foundation.更多还原