GIS在县级土地利用信息化建设中的应用

Application of GIS to Land Use Informationization at the County-level

根据县级土地管理机构中土地资料形式陈旧,管理手段落后,不适应经济发展需要的现实状况,探讨了在县级土地利用信息化建设中,现有土地信息资料的利用处理,论述了纸质图数字化、CAD数字图与GIS数据格式转换、图形元素分类、确立GIS图元对应关系及建立空间数据拓扑关系的方法和步骤,阐述了应用MapGIS建立县级土地利用信息数据的总体技术路线,并具体介绍了MapGIS的矢量化工作流程和数据格式转换操作步骤。

The land management section of our country has produced a great deal of vector sketch data using of CAD etc. graphics softwarel These data need to be converted to GIS format for the infoemationnization of Land Use. This paper investigates the processes of converting paper map and digital graphic in the format of CAD to GIS format via GIS software. And some key technologies, such as the correspondence principle of graphic elements between CAD and GIS, the construction of Topology, are discussed in detail.