【摘要】 本文探讨了以互联网为平台、以客户 /服务器 (C/ S)和浏览器 /服务器 (B/ S)三层结构模型为基础的城市环保信息系统 (GIS)。在分析比较两层与三层系统体系结构的基础上 ,提出系统构建的总体思路 ,并着重强调了构件技术在系统建设中的特殊作用。在网络环境下增强了客户端对于城市环保信息的可操作性 ,除实现对环保信息远程查询检索之外 ,还增加了远程数据录入、处理与分析的功能。在城市环保 GIS中还引入环保专业分析模型 ,通过通用的接口平台 ,将专业分析模型与环保信息有机融合 ,实现了污染分析模型在地理空间上的三维可视化 ,为环保管理和环境保护决策提供了形象而定量化的依据。更多还原

【Abstract】 This paper analyses urban environmental protection GIS based on Internet and three tier applications architecture and puts forward the application structure for the system according to the comparison between two tier architecture and Three tier applications Architecture During the procession of software development, the component technology becomes the most splendid method At client the remote data input, process and analysis are supplied as well as search function In order to realize the visualization of environmental models in geographical space, the environmental models are introduced into GIS and combined with GIS through a set of interfaces Under the support of GIS and models the Environment management gets great support from the system更多还原