Journal of the Korean Society of Environmental Restoration Technology (한국환경복원기술학회지)

The Korea Society of Environmental Restoration Technology (한국환경복원기술학회)
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Monitoring Vegetation Structure Changes in Urban Wetlands

도시 내 습지의 식생구조 변화 모니터링

  • Kim, Na-Yeong (National Institute of Ecology, Research Center for Endangered Species) ;
  • Nam, Jong-Min (National Institute of Ecology, Research Center for Wetland) ;
  • Lee, Gyeong-Yeon (National Institute of Ecology, Research Center for Endangered Species) ;
  • Lee, Kun-Ho ;
  • Song, Young-Keun (Dept. of Environmental Design, Graduate School of Environmental Studies, Seoul National University)
  • 김나영 (국립생태원 멸종위기종복원센터) ;
  • 남종민 (국립생태원 습지센터) ;
  • 이경연 (국립생태원 멸종위기종복원센터) ;
  • 이근호 ((주)국토환경엔지니어링) ;
  • 송영근 (서울대학교 환경대학원 환경설계학과)
  • Received : 2023.11.20
  • Accepted : 2023.12.04
  • Published : 2023.12.30
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Abstract

Urban wetlands provide various ecosystem services and are subject to restoration and creation projects due to their increased value in the context of climate change. However, the vegetation structure of wetlands is sensitive to environmental changes, including artificial disturbances, and requires continuous maintenance. In this study, we conducted a vegetation survey of three wetlands created as part of a project to restore urban degraded natural ecosystems and monitored the quantitative changes in wetland vegetation structure using an unmanned aerial vehicle. The vegetation survey revealed 73 species in Incheon Yeonhui wetland, and the change in vegetation composition based on wetland occurrence frequency was 11.5% on average compared to the 2018 vegetation survey results. The vegetation survey identified 44 species in Busan Igidae wetland, and the proportion of species classified as obligate upland plants was the highest at 48.8% among all plants, while the proportion of naturalized plants accounted for 15.9% of all plants. The open water surface area decreased from 10% in May 2019 to 6.7% in May 2020. Iksan Sorasan wetland was surveyed and 44 species were confirmed, and it was found that the proportion of facultative wetland plant decreased compared to the 2018 vegetation survey results, and the open water surface area increased from 0.4% in May 2019 to 4.1% in May 2020. The results of this study showed that wetlands with low artificial management intensity exhibited a tendency for stabilization of vegetation structure, with a decrease in the proportion of plants with high wetland occurrence frequency and a relatively small number of new species. Wetlands with high artificial management intensity required specific management, as they had a large change in vegetation structure and a partially high possibility of new invasion. We reaffirmed the importance of continuous monitoring of vegetation communities and infrastructure for wetlands considering the function and use of urban wetlands, and restoration stages. These research results suggest the need to establish a sustainable wetland maintenance system through the establishment of long-term maintenance goals and monitoring methods that consider the environmental conditions and vegetation composition of wetlands.

Keywords

Acknowledgement

본 연구는 환경부의 재원으로 한국환경산업기술원의 습지생태계 가치평가 및 탄소흡수 가치증진 사업의 지원을 받아 수행되었음 (2022003630004).

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