Environmental Data Base for Structural Modeling in the Middle Basin of Tamagawa River, Central Japan

Abstract

Structural modeling for Environmental Management Planning, using the middle basin of the Tamagawa River as an example, is presented. The model makes use of the environmental data base. Multivariate analyses are used for classifying and structuring environmental elements such as geology, landform, soils, actual vegetation, landuse and population density.
Hayashi's Quantification theory III, is applied to subdivide the catchment into 6 regions. Characteristics of environmental units for each regions are summarized by using Quantification theory III and Cluster analysis.Land use changes in each environmental units are examined through Factor analysis.
It is shown that multivariate analysis is useful for the regional subdivision and evironmental modeling.