植物相による佐保川の汚濁度の評価

概要

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The floristic composition of the Saho river in Nara City was studied in order to evaluate the water quality. The floristic composition and the chemical water quality were investigated at seven sites of the river. These sites are numberd (1 to 7) from the upper stream. The floristic composition changed along the river; species and individuals of plants gradually increased in number from the site 1 to 6, while they decreased in the site 7. The water quality also changed; the concentration of nutritive salts and the electric conductivity gradually increased from the site 1 to 6 and steeply increased at the site 7. This fact proves a close relationship between the floristic composition and the water quality. Thus, it is concluded that the water quality can be evaluated by the florictic composition in the Saho river.
奈良教育大学の論文