Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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A Study on the Effect of Water Level and Inundation Period on the Plant Coverage of Revegetation Methods of Stream Bank in the Coastal Reclaimed Land - Focus on a Case of the Test-bed of the Simgok Stream in Incheon -

해안매립지 하천의 수위 및 침수기간이 저수하안 식생공법의 식생피도에 미치는 영향 - 인천광역시 심곡천 실험구의 사례를 중심으로 -

  • Shin, Beom-Kyun (Institute of Landscape Planning Hyea-Ju Kim) ;
  • Kim, Hyea-Ju (Institute of Landscape Planning Hyea-Ju Kim) ;
  • Choi, Gye-Woon (Dept. of Civil and Environmental System Engineering., Univ. of Incheon) ;
  • Han, Man-Shin (International Center for Urban Water Hydroinformatics Research and Innovation)
  • 신범균 (김혜주자연환경계획연구소) ;
  • 김혜주 (김혜주자연환경계획연구소) ;
  • 최계운 (인천대학교 공과대학 토목환경공학과) ;
  • 한만신 ((재)국제도시물정보과학연구원)
  • Received : 2012.03.13
  • Accepted : 2012.06.09
  • Published : 2012.06.30
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Abstract

The study performed the implementation monitoring of the revegetation methods applied to the test-bed of Simgok Stream in Incheon to identify the effect of water level and inundation period on the vegetation coverage of the stream bank revegetation methods. The categories of monitoring included the plant species and plant coverage for each method, physicochemical property of soil, water level and water quality. The result of monitoring revealed that plant growth conditions of all revegetation methods of each stream bank were good in the first survey as of May 2010. However, in the second survey of June 2011 when inundation period was less than a week, plant growth conditions and coverage of revegetation methods were partially bad. In the third survey as of August 2011 when inundation period was longest as 8 weeks during survey period, most vegetations did not survive except for Phragmites communis. But plant species number and plant coverage were increased gradually in the forth survey as of October 2011 when inundation period was less than 2 weeks so water level decreased more than that of third survey. Accordingly, the correlation analysis among number of plant species and plant coverage on stream bank, which applied revegetation method, water level and inundation period was performed for quantitative analysis. The result revealed that number of plant species and plant coverage has a negative correlation with water level and inundation period, but inundation period had higher correlation with plant occurrence than water level.

수위 및 침수기간이 저수하안 식생공법의 식생피도에 미치는 영향을 규명하기 위하여 심곡천 실험구에 적용된 식생공법에 대한 시공모니터링을 수행하였다. 시공모니터링의 항목은 각 공법의 출현식물종과 피복도, 토양의 이화학적 특성, 수위 및 수질 등이다. 모니터링 결과, 2010년도 5월 1차 조사에서는 모든 저수하안 식생공법의 식물생육은 양호하였으나, 2011년 약 1주일 이하의 침수가 있었던 6월 2차 조사에서는 적용된 식생공법의 식물 생육상태 및 피도가 부분적으로 불량하였다. 그리고 조사 기간 중 침수기간이 약 8주로 가장 길었던 8월 3차 조사에서는 갈대를 제외한 대부분의 식생이 고사하였다. 하지만 침수기간이 2주 이내로 3차 조사 때 보다 수위가 하강한 10월 4차 조사에서는 식물의 출현종수와 피복도가 점차 회복되는 것으로 관찰되었다. 이에 정량적 분석을 위하여 식생공의 식물출현종수 및 피도와 수위, 침수기간에 대한 상관성 분석을 실시하였다. 그 결과 출현종수 및 피도는 수위 및 침수기간과는 음(-)의 상관성을 나타내었는데, 침수기간이 수위보다 다소 더 높은 상관성이 있는 것으로 분석되었다.

Keywords

References

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