甲府市内河川水質の相関関係とその利用

概要

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Correlation coefficients, multiple correlation coefficients, and Kendall's rank correlation coefficients with water quality data of rivers in Kofu were calculated between water qualities, sampling stations, and yearly data. The results indicate that in terms of water qualities there are fairly intense correlations between BOD and COD, turbidity and suspended solids, chlorine ion and conductivity, etc. and also indicate that for inter-station correlations there are intense correlations in flow rate and chlorine ion between near located stations along a river. The correlations are not intense enough to find a possibility to produce functional formula to exclude testing items of water quality or sampling points. Rank correlation coefficients may be helpful in explaining that radical change in water quality is hardly seen in a couple of years.
山梨大学の論文