Progress in Management System of Resource and Environmental Modelbase
资源环境模型库管理系统研究进展

Management System of Resource and Environmental Model base(MSREM) is one of the essential issues in resource and environmental field.There are usually two ways to develop MSREM,of which one is the model management techniques including database approach,structured modeling approach,object-oriented approach and knowledge-based approach,and another one is model management in GIS software such as Model Builder in ArcGIS.The first way can efficiently manage the models,but requires creating lots of codes to handle spatial data.The second way can utilize GIS to manipulate spatial data,but it doesn't support building complex mathematical models.This paper proposes an object-oriented framework for MSREM,in which models are abstracted to model class and model instance.Model class and model instance are represented as an object.Spatial data and mathematical equation are parsed by Model Engine that is composed of mathematical library and GIS component.Model management and model reuse can be efficiently realized by combination of model base and database.