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The Quality of Water and Distribution of Vegetation According to Land Use Pattern

토지이용패턴에 따른 하천수질과 식생분포

  • Oh, Young-Ju (Department of Environment and Ecological Technology, Korea University) ;
  • Kang, Byoung-Wha (Department of Environment and Ecological Technology, Korea University) ;
  • Kim, Byoung-Woo (Department of Life Science, Sangji University) ;
  • Kim, Sung-Pil (National Institute of Agricultural Science and Technology) ;
  • Han, Min-Su (National Institute of Agricultural Science and Technology) ;
  • Kim, Jin-Ho (National Institute of Agricultural Science and Technology) ;
  • Na, Young-Eun (National Institute of Agricultural Science and Technology)
  • Published : 2006.03.31

Abstract

The land use pattern, water quality and vegetation were investigated in the six tributaries, including Hanggeumcheon and Satancheon of the Namhan hydrosphere, Iksancheon, Jeonjucheon and Gosancheon of the Mankyung hydrosphere as well as Jongeupcheon of the Dongjin hydrosphere. Forest and farmland area were extensive in Hanggeumcheon, Satancheon and Gosancheon. Farmland and livestock area were wide in Iksancheon. Jeonjucheon were occupied with broad urban. Industrial and urban area were extensive in Jongeupcheon. The loading amounts of biochemical oxygen demand (BOD), total nitrogen (T-N), total phosphorus (T-P) of Iksancheon and chemical oxygen demand (COD) of Jeonjucheon were determined to be very high, respectively. The quality of water in Hanggeumcheon, Satancheon and Gosancheon were determined to be good quality. The species diversity was lower in the down stream than in the upper stream except for the Gosancheon. Life form of plane were mostly perennial plane in the upper stream and annual plants in the down stream of rivers. It was estimated that there is high level of disturbance in the down stream of rivers. The quality of water was significantly correlated with farmland and forest area. In conclusion, human impact, such as farmland and housing lot exerted an influence on the disturbance of down stream and the water quality of rivers.

남한강 수계의 항금천과 사탄천, 만경강 수계의 익산천, 전주천, 고산천과 정읍천의 수계와 유역을 대상으로 수질, 토지이용현황, 식생을 조사한 결과 항금천, 사탄천과 고산천은 산림지역과 농경지로 구성되고 익산천은 대부분 농경지이며 축산단지가 형성되어 있고 전주천은 도시지역을 많은 범위에서 차지한다. 정읍천은 공업지역과 도시지역이 함께 분포하고 있는 것으로 조사되었다. 하천의 수질은 BOD, T-N, T-P는 익산천에서 가장 높게 나타났고 COD는 전주천에서 높게 조사되었다. 산림지와 농경지가 대부분인 항금천, 사탄천과 고산천은 수질이 양호한 것으로 분석되었다. 하천 식물의 종다양성은 상류보다 하류지역이 익산천을 제외하고 낮게 조사되었다. 생활형의 비교에서는 상류에서는 다년생이 대부분을 차지하고 있으며 하류에는 일년생이 높은 점유율을 보이고 있었다. 하천 수질과 토지이용 그리고 식물의 생활형은 상관관계를 가지며 하천의 농경지와 주거지 같은 인간의 영향이 있는 곳의 생태계의 교란은 하천의 수질과 식생에 영향을 미치는 것으로 판단되었다.

Keywords

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Cited by

  1. Distribution of Vascular Plants in Namhan River, Chungju-si vol.25, pp.2, 2012, https://doi.org/10.7732/kjpr.2012.25.2.209