数字流域中的空间信息及其应用框架结构研究

论述了数字流域中空间信息的分类和空间信息的基本内容；以数字清江为实例，讨论了流域空间信息的分布式、多级次存储结构；根据流域水资源可持续综合利用的主题，提出了流域空间信息应用分析的各主要模块及其功能；最后探讨了以互联网或企业专用网为网络技术，以ArcSDE/ArcInfo为GIS平台的数字流域空间信息系统的框架结构。

Study on the Framework Architecture of Spatial Information and Its Application

As sub nodes of digital earth in regional level, digital valley and digital city have not only some common ground but also much differentia between them. However, discussion on digital valley is much less than on digital city. In this paper, the framework architecture of spatial information and its application is discussed in detail with the example of Digital Qingjiang Valley. At first, the contents of digital valley are studied and a hierarchy of spatial data category is suggested. Based on the study of valley spatial data warehouse and spatial application models, we put forward a overall framework architecture of digital valley, which includes five parts: valley spatial data warehouse, spatial data clearinghouse, spatial data processing and analyzing, special users, public users.