| 基于知识对象的土地管理空间数据库模型设计与实现 |
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| 引用本文： | 舒飞跃,闾国年,陆婧,盛业华.基于知识对象的土地管理空间数据库模型设计与实现[J].地球信息科学,2010,12(3):348-357. |
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| 作者姓名： | 舒飞跃 闾国年 陆婧 盛业华 |
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| 作者单位： | 1. 南京师范大学虚拟地理环境教育部重点实验室, 南京 210046;
2. 江苏省国土资源信息中心, 南京 210029 |
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| 基金项目： | 国家863工程项目（2007AA12Z221）“基于中文文本的GIS空间操作关键技术研究”资助 |
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| 摘 要： | 空间数据模型建立的目的是反映现实世界。当今的GIS系统的空间数据模型,主要反映地图制图领域的点、线、面对象管理与操作的几何知识。本文通过对比研究,发现土地管理空间概念的领域知识,包含几何知识。几何知识是依据几何特征属性识别的土地管理领域知识之一。将土地管理领域空间概念的领域知识对象化,建立与几何知识对象等价的对象组件,扩展对象关系型的空间数据模型,建立了"领域空间知识对象]+GIS的点、线、面的几何对象]+扩展属性]"的空间数据模型。这种模型简化了空间数据库的管理操作,降低了对工作人员制图专业知识的要求,降低了空间对象实例与其属性的耦合度,减少了政策变化对数据的影响程度,提高了数据的稳定性和共享度。鉴于这种空间数据库模型,本文开发了空间知识对象的江苏省"515"城乡一体化地籍系统的数据检查子系统,在镇江市、江都市等多个市县的"515"城乡一体化地籍调查的数据检查入库工作中得以应用,证明了模型设计的可行性,收到了良好的效果,为专题GIS空间数据管理,提供了一种的新的空间数据模型。
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| 关 键 词： | 知识对象 土地管理 空间数据 模型 |
| 收稿时间： | 2009-12-08; |
Design of Spatial Database Model for Knowledge Object Based Land Management |
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| SHU Feiyue,LV Guonian,LU Jing,Sheng Yehua.Design of Spatial Database Model for Knowledge Object Based Land Management[J].Geo-information Science,2010,12(3):348-357. |
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| Authors: | SHU Feiyue LV Guonian LU Jing Sheng Yehua |
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| Institution: | 1. Key Laboratory of Virtual Geographic Environment,Ministry of Education,Nanjing Normal University,Nanjing 210046,China;
2. Jiangsu Province Land Resource Information Center,Nanjing 210029,China |
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| Abstract: | The aim of establishing spatial data model is to reflect the real world.However,the spatial data model of main GIS systems only reflect knowledge of management and manipulation objects in field of cartography,such as point,line and poly geometry objects.In this paper,comparative studies showed that domain knowledge of land management spatial concept covers knowledge of geometry.Knowledge of geometry is one of land management domain knowledge that can be identified by the geometric characteristics of attribution.Therefore,it is reasonable to rearrange the domain knowledge of land management spatial concept as object-oriented knowledge,establish object components which are equivalent to knowledge of geometric object and to extend object-relational spatial data models.The aim is to establish a type of spatial data model named ＂the domain spatial knowledge object] ＋ GIS point,line and plane geometric object]＋extension property]＂.The benefits of this model include simplification of operations in database management,reduction of requirements for domain knowledge of cartography stuff,easing the degree of coupling between instance of spatial objects and their corresponding attributes,reducing the effect of data source caused by government policies,and improving data stability and the degree of data sharing.Based on the model,a kind of data checking subsystem in ＂515＂ urban and rural cadastral system is established.The practices of using the ＂515＂ urban-rural integration of cadastral survey data warehousing inspection work in Zhenjiang,Jiangdu and many other cities and counties showed the reliability of the model designed in this paper.It also had a good performance and provided a new spatial data model for the thematic GIS spatial data management. |
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| Keywords: | knowledge object land management spatial data model |
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