摘要
具备时空计算特征的元胞自动机(CA)模型与GIS集成极大促进了GIS对地理过程的模拟能力。论文简要介绍了空间信息多级网格(SIMG)——一种既能适合网格计算环境又充分考虑到地球空间的自然特征和社会属性的差异性及经济发展不平衡的特点的空间信息表示新方法。充分研究了SIMG与CA之间的联系,分别讨论了在SIMG上CA元胞及状态的确定、元胞空间的确定、规则的定义、时间粒度确定等,提出了空间信息多级网格元胞自动机模型(SIMGCA),并提出了SIMGCA模型在土地利用/覆被变化中的应用框架。
The integration of GIS and CA （Cellular Automata） with spatio-temporal attribute has accelerated GIS＇s ability to simulate geographical process greatly.This paper introduces briefly the principle of the Spatial Information Multi-Grid（SIMG）,a new representation method for spatial data and spatial information,which can not only easily run at grid computing environment, but also properly consider the differences of natural and social characteristics in earth space as well as the different levels of economical development in different areas.This paper discusses the correlation between SIMG and CA aiming at the determination in cell shape and states,ceil space,neighbourhoods and transition rules,discrete time.The authors put forward a new CA extended model based on SIMG called SIMGCA.Finally a general application framework of SIMGCA for simulating the process of land use and cover change is brought forward.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第9期4-7,35,共5页
Computer Engineering and Applications
基金
国家高技术研究发展计划(863)(the National High-Tech Research and Development Plan of China under Grant No.2003AA132080) 。
