Environmental Information System for River Basin

为了保护美好的自然，创造舒适的生活环境，必须把握流域中存在的环境资源，然而，由于城市问题，很难有效地思考如何有效地创造环境，以保护和利用流经大都市地区的宜渡河这样的大河流的环境资源。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。调查人员正在开发一个环境信息系统，以第一步掌握和分析区域景观结构。该环境信息系统处理的范围很广，基于1：20万或1：25000比例尺绘制的小比例尺地图。该系统与商用地理信息系统(GIS)、CAD/CG系统、数据库管理(DBM)系统和数据库相结合，以。可视化日本Yodo河下游的区域信息。强调已经生成了数字地形模型的三维表示。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，可以容易地使用诸如纹理映射之类的CG技术。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.