Establishment of Hydro-Environmental Analysis Methods Using Advanced GIS

本研究共进行了六个课题：1）验证GIS在水环境分析中的有效性（Takara和Hirata）。利用先进的地理信息系统，Takara研究了遥感图像的空间分辨率对土地覆盖分类的影响。2）模糊模式分类技术的发展及其在水文环境分析中的应用（清水）。Shimizu比较了神经网络和GMDH在遥感图像模糊分类中的适用性。3）GIS在森林环境分析中的应用（Y.福岛和本田）。本田利用地理信息系统（GIS）和遥感技术，调查了芦尾铜矿的森林砍伐和sabo工程的影响。福岛开发了基于50 m DEM的河道网描绘个人计算机系统。4）开发图像处理系统（藤田）。5）径流分析模型（Kojiri，Loo，Tachikawa，Takara）的开发。Loo开发了一种生成DEM的算法和基于DEM的分布式径流模型。Tachikawa引入了不规则三角网（TIN）来精确描述流域。Kojiri和Takara基于详细的数字隆德使用数据构建了八田河流域的径流模型。6）GIS在流域管理中的应用（T.福岛和Hori）。堀开发了淀川流域地理、水文和气象数据的数据库系统。福岛构建了东京都水环境长期预测系统。

This research conducted six subjects :1) Verification of efficiency of GIS in hydro-environmental analysis (Takara and Hirata). Using an advanced GIS,Takara investigated the effect of spatial resolution of remote sensing images on land cover classification. Hirata varified the effectiveness of GIS in forest environment analysis.2) Development of a fuzzy pattern classification technique and its application to hydro-environmental analysis (Shimizu). Shimizu compared applicabilities of neural network and GMDH to fuzzy classification of remote sensing images.3) Application of GIS to forest environmental analysis (Y.Fukushima and Honda). Using GIS and renote sensing, Honda investigated the influence of deforestation and sabo works in the Ashio copper mine. Fukushima developed a personal computer system for delineating river channel networks based on 50-m DEM.4) Development of image processing system (Fujita). Fujita constructed an image processing system for surface flow velocity distribution using aerial photographs and video images.5) Development of runoff analysis medels (Kojiri, Loo, Tachikawa, and Takara). Loo developed an algorithm for producing DEMs and a distributed runoff model based on DEMs. Tachikawa introduced triangular iregular network (TIN) for precise description of river basin. Kojiri and Takara constructed a runoff model for the Yata River basin based on Detailed Digital Lund Use Data.6) Application of GIS to basin managemant (T.Fukushima and Hori). Hori developed a data base system for geographic, hydrologic, and meteorologic data in the Yodo River basin. Fukushima constructed a system for long-term prediction of water environment in Tokyo metropolitan area.