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한국하천호수학회 / v.38, no.spc, 2005년, pp.39-43 
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( The Effect of Rainfall on the Water Quality of a Small Reservoir (Lake Wangkung, Korea) ) |
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| 초 록 |
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| The dynamics of water quality with the storm events were analyzed in a small reservoir for irrigation, Lake Wangkung. Water quality of the inflowing stream fluctuated seasonally with the variation of flow rate. Thermal stratification was consistent from April to October below 2 m depths and anoxic layer was developed below 2 m depth in summer. The unique feature of temperature showed that thermal stratification was disrupted by a heavy rain event during monsoon, but hypolimnetic hypoxia were reestablished after a few days. Phosphorus and nitrogen increased immediately following storm events. The marked increase may be due to the input of P-rich storm runoff from the watershed. Internal phosphorus loading can be one of the explanations for TP increases in summer. When there was a storm, total populations of phytoplankton and zooplankton was reduced immediately following the storm, indicating possible flushing of algae and zooplankton. After a lag period of low-density the plankton population bloomed to a peak again within five days after the storm. Turbid water in lake became clear again which coincided with the time of the phytoplankton buildup. The results demonstrate that water quality is regulated greatly by rainfall intensity in Lake Wangkung. |
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| 키워드 |
| Lake Wangkung;water quality;effect of rainfall; |
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한국하천호수학회지 / v.38, no.spc, 2005년, pp.39-43
한국하천호수학회
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200518317186006)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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