基于地理本体的海湾空间数据组织方法——以辽东湾为例

数字海湾的建设,面临着空间数据组织问题。本文在对基于分层和基于地理特征的空间数据组织方式及元数据技术深入分析的基础上,针对海湾多要素、多层次、多资源和多领域的复杂系统,采用地理本体的思想进行海湾的认知表达,并由此提出了基于地理本体的海湾空间数据组织方法。通过对海湾地理本体的建模,建立了更能客观反映海湾地理实体各个层次体系的概念模型,再根据海湾概念和已有的多源空间数据集之间的映射关系,重构地理本体支持下的海湾空间数据库,从而实现海湾多源空间数据的海、滩、陆一体化集成与管理。最后,以辽东湾为例,对该海湾所涉及到的多源空间数据进行了有效的组织。结果表明,利用地理本体的思想对空间数据进行组织管理,可以消除不同领域对信息理解的鸿沟,有利于数据的共享和互操作。

Geospatial Data Organization of the Bay Based on the Geo-ontology——A Case Study of the Liaodong Bay

The bay is a complicated system with multi-source, multi-domain,multi-features and multi-hierarchy,and its way of spatial data organization is crucial to the building of digital bay.This paper used the idea of geo-ontology to represent the bay,and put forward a new spatial data organization method based on geo-ontology on the basis of the analysis of the layere-oriented and feature-oriented way of spatial data organization,as well as the metadata technology.The step of the method is as follows: firstly,the bay ontology is modeled which includes a conceptual model reflecting the hierarchy of the bay well.Then a spatial database of the bay based on geo-ontology is reconstructed according to the mapping relationship between bay concepts and exiting multi-source geo-datasets.By this way,the integration and management of the spatial data of the sea area,land area and inter-tidal zone of multi-source can be realized.In the third part of the paper,the Liaodong Bay was taken as a case study,and its related spatial data of multi-source was well organized using the above way.The result shows that using the idea of geo-ontology to organize and manage the geospatial data is helpful to the understanding of users from different domains,and is good for the semantic sharing and inter-operation of the spatial information of the bay.