Environmental Information System for River Basin

为了保护良好的自然环境，创造舒适的生活环境，必须掌握流域中存在的环境资源，但由于城市问题，像Yodo河这样流经首都圈的大河，很难有效地思考环境创造的方法，以保护和利用环境资源。环境信息系统被要求分析和评价城市活动与环境资源之间的关系，并为规划和设计提供支持。研究人员首先开发了一个环境信息系统，以掌握和分析区域景观结构。环境信息系统以1:20 000比例尺或1:25 000比例尺绘制的小比例尺地图为基础，处理广泛的区域。该系统结合了市售地理信息系统（GIS）、CAD/CG系统、数据库管理（DBM）系统和数据库。可视化的区域信息在Yodo河下游，日本。强调的是，数字地形模型的三维表示已经生成。可视化数据可以使用标准的CAD数据格式在一些应用程序之间导入和导出。因此，像纹理映射这样的CG技术可以很容易地使用。因此，该系统与一些平台合作，扩展了区域信息的可视化。

It must be grasped what environmental resources exist in a river basin to preserve the fine nature and to create the comfortable living environment, However, it is difficult to think effectively about methods of environmental creation to preserve and utilize the environmental resources in such big rivers as the Yodo River runs through the metropolitan area because of urban problems. The environmental information system is asked to analyze and evaluate the relation between the urban activities and the environmental resources, and to support the planning and design. The investigators have been developing an environmental information system to grasp and analyze the regional landscape structure for the first step.The environmental information system deals with a wide area, based on a small-scale map drawn on a scale of 1 : 200,000 or a scale of 1 : 25,000. This system is combined with a commercially available geographic information system (GIS), CAD/CG system, database management (DBM) system, and databases to. visualize the regional information in the lower reaches of Yodo River, Japan. It is emphasized that a three-dimensional representation of the digital terrain model has been generated. The visualized data can be imported and exported among some application programs using a standard CAD data format. Thus, CG techniques such as texture mapping can be used easily. Consequently, the system expands the visualization of the regional information in cooperation with some platforms.