In this study, 46 reservoirs in South Korea were characterized based on heavy metal concentration in sediments. We analyzed the relationship between heavy metal concentrations, physicochemical water quality and hydromorphological factors in each reservoir. Study reservoirs were classified into five groups of reservoirs, by hierarchical cluster analysis based on the similarities of heavy metal concentration. Group 1 had the most severe sediment heavy metal contamination among the groups, whereas Groups 2 and 3 showed low levels of heavy metal contamination. Group 4 displayed high value of Ni, and Group 5 showed high contamination of Pb, Cu, Cr, Ni, and Hg. Groups 1 and 5, which had high concentration of heavy metals in sediments, showed a high density of mines in the catchment of reservoirs. Heavy metal concentration was high in reservoirs with large capacity or the ones located at higher elevation, and also highly related with number of mines in the catchment of reservoir. This study can contribute to the systematic management of sediment heavy metals in reservoirs.

Abstract
서 론
재료 및 방 법
    1. 자료 수집
    2. 퇴적물 내 중금속 농도에 따른 호소 분류 및 특성 분석
결과 및 고 찰
적 요
REFERENCES

• 정윤상(경희대학교 생물학과) | Yun Sang Jeong (Department of Biology, Kyung Hee University)
• 이대성(경희대학교 생물학과) | Dae-Seong Lee (Department of Biology, Kyung Hee University)
• 이다영(경희대학교 생물학과) | Da-Yeong Lee (Department of Biology, Kyung Hee University)
• 곽인실(전남대학교 해양융합과학과) | Ihn-Sil Kwak (Department of Ocean Integrated Science, Chonnam National University)
• 박영석(경희대학교 생물학과) | Young Seuk Park (Department of Biology, Kyung Hee University) Corresponding Author