印旛沼水質改善に向けた水位低下実験

中村 彰吾; 本橋 健; 増岡 洋一; 林 薫; 湯浅 岳史; 東海林 太郎

doi:10.11532/river.15.0_195

EXPERIMENT OF THE DRAWDOWN OF LAKE INBA-NUMA AIMED FOR WATER QUALITY IMPROVEMENT

Shogo NAKAMURA, Ken MOTOHASHI, Youichi MASUOKA, Kaoru HAYASHI, Takashi YUASA, Taro SHOJI

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Keywords: drawdown experiment, water quality improvement, submerged plants restoration, seed bank

JOURNAL FREE ACCESS

2009 Volume 15 Pages 195-200

DOI https://doi.org/10.11532/river.15.0_195

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Abstract

Water level of Lake Inba-numa has been managed to be higher and less fluctuated than before since 1968 because of the water resources development. Unfortunately lake water quality became worse at that time, and these changes are thought to cause the disappearance of submerged plants in the lake.

In this paper, we present the results of drawdown experiment of lake water level to improve water quality through the restoration of submerged plants.

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