建立森林地理空间数据库的方法

The Method of Setting up Forest and Geography Data Base

通过对大兴安岭林管局１０ 个林业局建立森林地理空间数据库的过程．研究了区域框架结构及图层结构设计、投影及坐标一体化、数据模型、地图数据预处理、地图数据文件编码、文件索引等大区域森林地理空间数据库组织的技术方法。这些方法将影响数据查询速度、森林生态系统空间分析变量和模型的选择、模型尺度转换及空间分析效率。

Based on the process of setting up forest and geography data base for ten forest bureaus. the method organizing forest and geography data in a geographic information system data base for broad areas was studied. which contains area format structure. map layer design. integrated project and coordinate system, data model. the preprocess of map data, file code of map data and file indexing. These techniques will influence speed querying data. variables and models of spatial analyst for forest ecological system selecting. model level conversion and efficiency of spatial analyst.