주남저수지의 수생태환경 특성에 대한 분석

Analysis on Characteristics of Aquatic Ecosystem Environment in Junam Reservoir

  • Park, Kyung-Hun (Dept. of Environmental Engineering, Changwon Nat'l Univ.) ;
  • Seo, Jeoung-Yoon (Dept. of Environmental Engineering, Changwon Nat'l Univ.) ;
  • You, Ju-Han (Dept. of Landscape Architecture, Dongguk Univ.)
  • 투고 : 2012.06.24
  • 심사 : 2012.09.04
  • 발행 : 2012.10.31

초록

본 연구는 주남저수지의 수질, 퇴적물, 저서성 무척추대형동물, 어류, 수생식물을 조사 및 분석함으로서 수생태계의 보전과 복원을 위한 기초자료 제공에 그 목적이 있다. 수질분석 결과, 수소이온농도(pH)는 8.2~8.4, 화학적 산소요구량(COD)은 6.0~7.5mg/L, 부유물질량(SS)은 10.0~10.3mg/L, 용존산소량(DO)은 8.3~11.5mg/L, 총인량(T-P)은 0.1mg/L, 총질소량(T-N)은 1.2~1.3mg/L로 나타났다. 퇴적물의 경우 Cd(카드뮴)는 0.47~0.52mg/kg, Cu(구리)는 7.08~7.43 mg/kg, As(비소)는 0.22~0.32mg/kg, Hg(수은)는 0.02~0.03mg/kg, Pb(납)는 6.20~7.45mg/kg, Ni(니켈)는 32.80~39.70mg/kg, F(불소)는 513.0~543.0mg/kg, Zn(아연)은 137.0~140.0mg/kg으로 나타났으며, $Cr^{6+}$(6가크롬)은 검출되지 않았다. 저서성 대형무척추동물은 3문 5강 9목 26과 33속 39종 432개체가 있는 것으로 확인되었으며, 저서성 대형무척추동물의 생태점수(ESB)는 25로 나타났다. 어류는 8과 14종으로 나타났으며, 생태계교란야생동식물은 큰입배스와 파랑볼우럭 등 2분류군이었다. 수생식물은 28과 42속 56종 1아종 6변종 등 총 63분류군으로 확인되었으며, 정수식물은 38분류군(60.3%), 부엽식물은 5분류군(7.9%), 부유식물 및 침수식물은 각 10분류군(15.9%)로 나타났다.

The purpose of this study was to offer the raw data for conservation and restoration of aquatic ecosystem by surveying and analysing a water quality, sediment, benthic macroinvertebrate, fish and hydrophyte in Junam reservoir. In the result of analysing the water quality, pH was 8.2~8.4, 6.0~7.5mg/${\ell}$ in COD, 10.0~10.3mg/${\ell}$ in SS, 8.3~11.5mg/${\ell}$ in DO, 0.1mg/${\ell}$ in T-P and 1.2~1.3mg/${\ell}$ in T-N. In case of the sediments, Cd was 0.47~0.52mg/kg, 7.08~7.43mg/kg in Cu, 0.22~0.32mg/kg in As, 0.02~0.03mg/kg in Hg, 6.20~7.45mg/kg in Pb, 32.80~39.70mg/kg in Ni, 513.0~543.0mg/kg in F and 137.0~140.0mg/kg in Zn. $Cr^{6+}$ was not detected. The benthic macroinvertebrates were 432 individuals including 3 phyla, 5 classes, 9 orders, 26 families, 33 genera and 39 species, and the ecological score of benthic macroinvertebrate community(ESB) was 25. The fishes were 8 families and 14 species, and the invasive alien species were 2 taxa including Micropterus salmoids and Lepomis macrochirus. The hydrophytes were 63 taxa including 28 families, 42 genera, 56 species, 1 subspecies and 6 varieties. The emergent plants were 38 taxa(60.3%), 5 taxa(7.9%) in floating-leaved plants and each 10 taxa(15.9%) in free-floating plants and submerged plants.

키워드

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