基于场模型的空间动态数据建模及空间动态模型语言设计

目前空间数据库的研究集中于基于对象 (Object)空间数据模型的研究 ,而基于场 (Field)空间数据模型的研究相对进展较慢 ,将来的需求要求空间数据库增加基于场模型的功能 ,特别是考虑到空间动态过程模拟的需要。该文的目的是设计一种能镶嵌在GIS系统里的空间动态模型语言 ,为模拟复杂时空过程提供数据库管理和算法优化支持 ,并支持逻辑清晰的模型框架结构。该语言可为自然资源管理和生态环境应用提供定量和模拟工具 ,扩展了空间数据库基于场模型的应用。

Model of Field-based Spatial Dynamic Data and Design of Spatial Dynamic Modeling Language

Current study on Spatial Database Management Systems is mainly focused on object-based spatial data model. However, existing and emerging applications require new functionalities to support field-based data, especially considering the need of spatial dynamic simulation. The objective of this paper is to design a spatial dynamic modeling language, which can be embedded in the GIS so as to provide the support to simulate complex space-time processes for database management and algorithm optimization. The language can also provide a clear logic diagram for building a spatial dynamic model and a quantitative and simulated tool for management of natural resources, environmental and ecological application.