Syntaxonomy and Distribution Characteristics of the Herbaceous Vegetation on Running Waterside in the Main Stream of Geumho River, Daegu and Gyeongsanbuk-do, Korea

금호강(대구, 경북)본류에서 유수변초본식생의 군락분류와 그 분포특성

  • Published : 2001.12.24

Abstract

The Herbal Vegetation on Running Waterside in the Main Stream of Genmho River, Daegu and Gyeongsanbuk-do, Korea was investigated by the methodology from June to August of 1994 and analyzed distribution characteristics of vegetation that was related Water Environment. The vegetation is divided into 6 communities of Persicaria sieboldi-Persicaria hydropiper community, Persicaria thunbergii community, Impatiens textori community, Zizania latifoloa community, Phragmites communis community and Echinochloa crus-galli var. oryzicola community. A BOD and COD that indicate degree of contamination in water were showed 0.9 ppm and 1.6 ppm at upstream and 15.9 ppm and 24.8 ppm at downstream, respectively. The distribution patterns of vegetation have dominated by Impatiens textoricommunity in the upstream, by Persicaria sieboldi-Persicaria hydropiper community from upstream to mid-upstream, by Persicaria thunbergii community from upstream to midstream, by Zizania latifoloa community from nidstream to mid-downstream and by Phragmites communis community and Echinochloa crus-galli var. oryzicola community from mid-downstream to downstream. Especially, I suggested that Persicaria sieboldi-Persicaria hydropiper community and Persicaria thunbergii community will use as biotic indicator in water environment.

1994년 6월부터 8월까지 금호강 본류의 유수변 초본식생을 식물사회학적으로 조사하였으며, 수질환경과 관련된 식생의 분포특성을 밝혔다. 금호강 본류의 하변식생은 여뀌-미꾸리낚시군락(Persicaria sieboldi-Persicaria hydropiper community), 고마리군락(Persicaria thunbergii community), 물봉선군락(Impatiens textori community), 줄군락(Zizania latifolia community), 갈대군락(Phragmites communis community), 물피군락(Echinochloa crus-galli var. oryzicola community)의 6군락으로 분류되어있다. 수질오염의 정도를 나타내는 BOD와 COD는 상류에서 각각 0.9ppm과 1.6ppm을 보였으며, 하류로 갈수록 증가하여 최하류에서는 각각 15.9ppm과 24.8ppm으로 나타났다. 하변식생의 분포유형은 최상류에 물봉선군락, 상류에서 중상류까지 여뀌-미꾸리낚시군락, 상류에서 중류까지 고마리군락, 중류에서 중하류까지 줄군락, 중하류에서 하류까지는 갈대군락 및 물피군락이 주로 우점하였다. 특히, 여뀌-미꾸리낚시군락과 고마리군락은 수환경의 생물지표로 이용될 수 있을 것으로 판단되었다.

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