Abstract

This research is aimed to calculate the amount of the generation pollution loadand the amount of the flowing pollution load in the Kojima lake region in Okayama prefecture where the pollution load is accumulated and the problem of eutrophication is elevated. By using GIS tool, the region is devidedinto several catchments and the spatial distribution is analyzed to investigate for the situation of the pollution load. The regression analysis is used to examine which sector of the generation pollution load influences the flowing pollution load. As the result, the industry sector is found to be the most critical factor for TOC loading, wheares T-N loading is mainly influenced by agriculture sector, and T-P loading is greatly effected by household sector.

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