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

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

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。

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.