中文摘要：

空间数据分类分级表达是GIS最基本的功能之一。针对目前GIS中空间数据表达的不足，借鉴Frederico．T等学者关于本体驱动的地理信息系统中类的变化类型及其变化机制的思想，将土地利用中类的变化分为垂直导航和水平导航2种类型。利用OWL描述的地理数据分类等级体系中的一个概念导航到其父概念或子概念，通过合并地理本体中的某个地理概念的所有子概念所关联的地理要素类中的要素，实现地理空间数据内容的复合；通过将地理本体中的某个地理概念所关联的地理要素类中的要素分别归类到其子概念所关联的要素类中，实现地理空间数据内容的特化。基于本体方法研究地理数据分类分级表达是对目前地理空间数据可视化表达方法的有益补充和丰富。

英文摘要：

The classified and hierarchical presentation of spatial data is a basic function of GIS, This paper is aimed at shortcoming that GIS presents spatial data, benefits from the thoughts about changed classification and its mechanisms of classes in ontology-driven GIS supposed by Frederico. T, divides changed classification and its mechanisms of classes into vertical navigation and horizontal navigation. The paper navigated one concept in classi- fied and hierarchical system of spatial data described by OWL to its parent-concept or sub-concept, combined fac- tors in geographical classes that are connected with all sun-concept of geographical concept in ontology, realized contents integration of geographical spatial data, and classified factors in geographical classes that are connected with geographical concept in ontology to the factor classes that sub-concept connected, realized contents differentia- tion of geographical spatial data. The work of this paper is a beneficial exploration for visualization methods research of geographical spatial data.