Research on Geospatial Cognition and Content Expression of Terrain Scenes
The Earth's surface exhibits a diverse topography,characterized by ups and downs in spatial geometry and carrying many geographical entities.With the advent of the era of spatiotemporal big data,the exploration of geospatial information gradually has shifted from spatial perception to spatial cognition.However,traditional information description methods based on Reductionism and independent hierarchical modeling are increasingly oriented toward geographic information management and visualization.It is difficult to describe the massive information,complex interactions,and spatiotemporal changes of terrain and its associated environmental elements using this information description method.To address this issue,this paper conducts a systematic geospatial analysis of the content and interaction of terrain ontology and associated environmental elements from the perspective of scenario science.We comprehensively describe the entities,relations,and spatiotemporal changes in the terrain scenario.Here,the terrain scenario is defined as the specific environment in which the terrain exists and the state changes.It is a regional complex composed of terrain objects and other natural and human objects with connections and functions within a certain time and space.The element composition and logical structure of terrain scenario are analyzed by employing holistic,semantic,and logical elements centered around time,place(space),things,events,and phenomena to describe terrain scenarios.The elements of terrain scene should be based on the elements of things,develop and evolve in a certain time and space,form the elements of events and phenomena,and finally form a complex that operates dynamically under the framework of time and space.We further analyze and organize the content composition of terrain scene objects and their associated information and create a structure description framework based on element object information architecture.Moreover,we prospect the future development of terrain scenario and the possible technical application directions in the future,such as the geoscience semantic network and knowledge map dominated by terrain and associated elements,the scene event spectrum based on the characteristics of spatiotemporal nodes and associated elements,and the scene holographic digital terrain analysis.The introduction of terrain scenes not only deepens the traditional methods but also provides a new idea at the conceptual level.It is an exploration of the concept of scene science and lays a foundation for a systematic approach for solving and expressing the evolution and development of terrain ontology and environment within the space-time framework.
NETL
NSTL
万方数据
