中文摘要：

基于面向服务的分布式空间信息支撑平台，从高可信网络计算环境、高可信空间信息、高可信软件、高可信计算平台4方面探讨构建GIS高可信服务计算环境的方法及其关键技术。为实现GIS空间信息存储的可靠性和发布的安全性，建立了基于角色访问控制权限的空间数据管理模型，并研究空间信息发布的中间件技术，展望构建GIS高可信服务计算环境的发展趋势和突破点。

英文摘要：

Based on the Service-Oriented Distributed Spatial Information Supporting System, this paper discusses the methods of building the high trustworthy service-oriented computing environment of GIS,and studies the key technologies in the building process based on high trustworthy computing network, high trustworthy spatial information, high trustworthy software and high trustworthy computing platform system. Combined with the authors work, this paper has designed and realized the trusted spatial data management model and middleware model. This paper emphasizes on studying the key technologies of the role-based access controlling spatial data management model and the network middleware based on the GIS platform middleware. At last, high trustworthy service-oriented computing environment tends and its key technical points are discussed.