Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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The 2009-based detailed distribution pattern and area of Phragmites communis-dominant and Suaeda japonica-dominant communities on the Suncheon-bay and Beolgyo estuarine wetlands

순천만과 벌교 하구 연안습지의 2009년 기준 갈대 및 칠면초 우세 군집 분포양상과 면적 제시

  • Hong, Seok Hwi (Earth Systems and Environmental Sciences, Chonnam National University) ;
  • Chun, Seung Soo (Earth Systems and Environmental Sciences, Chonnam National University) ;
  • Eom, Jin Ah (Korea Ocean Satellite Center, Korea Institute of Ocean Science and Technology)
  • 홍석휘 (전남대학교 지구환경과학부 지질환경전공) ;
  • 전승수 (전남대학교 지구환경과학부 지질환경전공) ;
  • 엄진아 (한국해양과학기술원 해양위성센터)
  • Received : 2014.12.31
  • Accepted : 2015.01.08
  • Published : 2015.02.28
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Abstract

Halophyte distribution pattern and area in the Suncheon-bay and Beolgyo estuary coastal wetlands were analyzed using KOMPSAT-2 landsat images were taken in 2008 and 2009, and field investigations were fulfilled for confirming the precise boundaries of individual halophyte areas. The salt-marsh vegetation in those areas can be classified mainly into two dominant communities: Suaeda japonica-dominant and Phragmites communis-dominant communities. In order to identify sedimentary characteristics, tidal-flat surface leveling and sedimentary facies analysis had been conducted. The sedimentary facies of marsh area are mostly silty clayey and clay facies with a little seasonal change and its slope is very gentle (0.0007~0.002 in gradient). Phragmites communis and Suaeda japonica communities were distributed in the mud-flat zone between 0.7 m and 1.8 m higher than MSL (mean sea level): zone of 1.1~1.8 m in the former and zone of 0.7~1.3 m in the latter. In the Suncheon-bay estuarine wetland, on the basis of 2009 distribution, Phragmites communis-dominant and Suaeda japonica-dominant communities are about $0.79km^2$ and $0.22km^2$ in distribution area, respectively. On the other hand, Bulgyo estuarine marsh shows that the distribution areas of Phragmites communis-dominant and Suaeda japonica-dominant communities are about $0.31km^2$ and 0.031km2 in distribution area, respectively. Individual 105 and 60 dominant community areas and their distribution patterns can be well defined and indicated in the Suncheon-bay and Bulgyo estuarine marshes, respectively. The distribution pattern and area of hylophyte communities analyzed in this study based on 2008/2009 satellite images would be valuable as a base of future monitoring of salt-marsh related studies in the study area which is the most important salt-marsh research site in Korea.

2008년과 2009년에 획득된 KOMPSAT-2 위성영상 자료와 야외조사를 병행하여 순천만과 벌교 연안습지의 염생식물 군락의 정밀한 분포경계를 확인하고 분포 양상과 면적을 구하였다. 순천만과 벌교 연안습지의 주요 군락은 갈대와 칠면초 우점군락으로 확인되었다. 퇴적특성을 파악하기 위해 조간대 표층의 수준측량과 퇴적상 분석이 수행되었다. 염습지의 퇴적상은 대부분 실트질 니와 니질 퇴적상을 보였으며 계절변화는 매우 작았고, 지형구배는 경사도가 $0.0007{\sim}0.002^{\circ}$로 매우 평탄하였다. 연구지역에서 염생식물은 평균해수면보다 0.7~1.8 m 높은 곳을 점하고 있었으며, 갈대우점군락은 평균해수면 위 1.1~1.8 m, 칠면초 우점군락은 평균해수면 위 0.7~1.3 m 높은 고도를 나타내는 범위에서 생육하고 있다. 2009년 분포를 기준으로 순천만 연안습지의 갈대 우점군락의 면적은 약 $0.79km^2$, 칠면초 우점군락의 면적은 약 $0.22km^2$로, 총 면적은 약 $1.01km^2$이다. 벌교천 하구 연안습지의 갈대 우점군락 면적은 약 $0.31km^2$, 칠면초 우점군락의 면적은 약 $0.031km^2$이며, 총 면적은 약 $0.341km^2$이다. 순천만-벌교 하구 염습지에서 각기 105개와 60개의 염생식물 단위군락의 분포양상과 면적이 제시될 수 있었다. 2008/2009년 위성영상에 의해 분석된 염생식물 군락의 정밀한 분포양상과 면적은 국내에서 가장 중요한 염습지인 해당 연구지역에서 향후 염습지 관련 모니터링의 기본자료로 매우 가치가 높을 것으로 판단된다.

Keywords

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