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NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Bulletin > Reports of the Faculty of Engineering, Nagasaki University > Volume 29, No. 53 >


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Title: 川原大池における栄養塩を中心とした水質変化特性と底泥の影響
Other Titles: The Change of the Water Quality on Nutritive Salts and the Effects of Bottom Sediment in Kawahara Lake
Authors: 竹本, 陽一 / 古本, 勝弘 / 孟, 琳
Authors (alternative): Takemoto, Youichi / Furumoto, Katsuhiro / Meng, Lin
Issue Date: Jul-1999
Citation: 長崎大学工学部研究報告 Vol.29(53) p.263-271, 1999
Abstract: The nutrient release from bottom sediment in a lake occurs under anoxic condition in the hypolimnion, and influences the water quality in the whole lake. The purpose of this study is to make the influence of bottom sediment on water quality clear. Annual change of water quality in Kawahara Lake was investigated, and laboratory tests and field tests to clear the consumption of dissolved oxygen and nutrient release were carried out. From the test data, the oxygen transfer coefficient and the nutrient release rate were discussed. By comparison the test results between the change of water quality in Kawahara Lake, the efficiency of the tests was confirmed. Further, the comings and outgoings of nutritive salts in the Lake became clear, and the function of drain system of bottom water was examined on discharging the nutritive salts.
URI: http://hdl.handle.net/10069/5081
ISSN: 02860902
Type: Departmental Bulletin Paper
Appears in Collections:Volume 29, No. 53

Citable URI : http://hdl.handle.net/10069/5081

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