Ecology and Resilient Infrastructure

응용생태공학회 (Korean Society of Ecology and Infrastructure Engineering)
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함평만 갯벌의 모래 퇴적물로 인한 염습지 식물의 공간적 변이

Spatial Variations of Salt Marsh Plants Induced by Sandy Sediment in Hampyeong Tidal Flat

  • 홍민기 (국립생태원 기후생태관측팀 ) ;
  • 이재연 (국립생태원 기후생태관측팀 ) ;
  • 박정수 (국립생태원 기후생태관측팀 ) ;
  • 이효혜미 (국립생태원 기후생태관측팀 )
  • Minki, Hong (Ecological Observation Team on Climate Change, National Institute of Ecology) ;
  • Jaeyeon, Lee (Ecological Observation Team on Climate Change, National Institute of Ecology) ;
  • Jeong-Soo, Park (Ecological Observation Team on Climate Change, National Institute of Ecology) ;
  • Hyohyemi, Lee (Ecological Observation Team on Climate Change, National Institute of Ecology)
  • 투고 : 2022.12.05
  • 심사 : 2022.12.14
  • 발행 : 2022.12.31
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초록

함평만은 좁은 만 입구와 복잡한 지형 구조로 인하여 비대칭적인 퇴적물 이동이 일어나기 때문에, 갯벌의 저질에는 모래 함량이 증가하는 것으로 연구되었다. 모래화 갯벌은 염습지 식생 분포를 변화시키는 것으로 현존식생도와 식생단면도 조사를 통해 분석되었다. 2016년과 2022년의 식생면적 비교에서 절대염생식물인 해홍나물군락은 74% 감소하였다. 반면 임의염생식물인 갯잔디군락은 75% 증가하였다. 특히 갯잔디는 지하경과 줄기의 밀도가 높게 발달하여, 군락 내 모래와 같은 퇴적물을 가둬서 견고한 사구환경을 조성하는 것으로 보인다. 함평만 갯벌의 효과적인 자연보전 관리 계획 수립을 위하여, 갯벌 토성 변화와 식생 군집의 상호작용이 향후 갯벌생태계에 미치는 영향에 대해 통합적 접근이 필요하다.

Hampyeong Bay has a narrow seawater channel and a complex topographical structure. The sand content of the tidal flat soil is increasing due to asymmetrical sedimentation. Through the investigation of the vegetation distribution and the use of the line-transect method, sand flats were observed to gradually change the vegetation distribution of salt marshes. Comparing the vegetation area between 2016 and 2022, the obligate halophyte Suaeda maritima decreased by 74% and Zoysia sinica increased by 75%. Z. sinica seems to support the robustness of the dune environment by trapping sediments such as sand in the colony, because the underground rhizomes and stems are highly developed. To establish an effective conservation management plan for tidal flats, an integrated study should be conducted to assess the impact of changes in tidal flat soil and the interaction of vegetation communities in Hampyeong Bay.

키워드

과제정보

본 연구는 국립생태원 "2022 국가 장기생태연구(NIE-고유연구(B)-2022-02)" 의 연구비 지원에 의해 수행되었습니다.

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