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박귀님 ( Gwi-nim Park ),오길영 ( Gil-yong Oh ),박혜영 ( Hyee-young Park ),박종수 ( Jong-soo Park ),이해훈 ( Hae-hoon Lee ),정경모 ( Kyung-mo Jeong ) 한국환경농학회 2016 한국환경농학회 학술대회집 Vol.2016 No.-
In order to efficiently supply suitable irrigation water, We investigated water quality at 5 intake-towers out of 3,206 agricultural reservoirs in Jeollanam-Do from may to september. The overall water quality was found to show a good side, and water temperature increasingly tend to decrease by water depth. Cold-water damage is expected by the thermocline formed on water temperature reduces. which is possible to supply low-oxygen water in the present way. Intake-tower is only 2% in Intake methods of agricultural water in Jeollanam-Do. winches and hydrological scheme has accounted for 98%. To avoid the cold-water demage and get agricultural water in good state regardless of weather change or water level fluctuation, we suggest the introduction of buoyancy type intake apparatus which can get optimum depth location at each reservoirs. Also it is necessary to install the water measuring instruments which might to provide the useful information such as water temperature, water level and turbidity in real time. They also would automatically adjust the height of the water intake.
정팔진,박귀님,곽동희 全北大學校 附設 都市및環境硏究所 1995 都市 및 環境硏究 Vol.10 No.1
To investigate the water quality of the Lake Jangseong, samples were collected 4 times during this study period at five stations each season. According to the inflowing stream loading, BOD loading was caused to land, human activity and fish farm sequentially. COD, T-N and T-P were contributed to fish farm, human activity and land sequentially. The Lake Jangseong had the characteristic of high algae growth rate according to long hydraulic retention time and low mean depth(9m of mean depth, 0.76year of hydraulic residence time). The amount of phosphorus accumulated was 5.2㎏/d. The excessive critical loading was 2.10tP/yr. The actual inflowing 8.36tP/yr, showing 4 times higher than the excessive critical loading. The water quality of the Lake Jangseong was transparency 1.4m, water temperature 13℃, pH 7.3, DO 6.9㎎/ℓ, COD 4.2㎎/ℓ, SS 5.1㎎/ℓ, T-N1.104㎎/ℓ, T-P 0.070㎎/ℓ, chlorophyll-a 17.5㎎/㎥. The water quality value was the highest in the fish farm(L2) by sites and high in winter, fall, summber, spring sequentially.