This paper introduces the Engine ENVI/IDL and ArcGIS, and gives the theoretical basis of the integrated develop-ment of the two. The geography situation survey system basis on ArcGIS Engine and ENVI/IDL. This system can implement such functions as data integration management, information inquiry and analysis, results application and services and database's operation and maintenance.%文中分别介绍了ArcGIS Engine与ENVI/IDL，并详细给出了二者一体化开发应用于地理国情普查系统的理论依据。指出了该系统，能够实现地理国情普查成果数据集成管理、信息查询分析、成果应用服务、数据库运行维护等方面功能，为地理国情普查提供支持。
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