This study examined the spatiotemporal changes in Jilnal Wetland using satellite image-based time series data and field surveys. The analysis focused on changes in open water surface area and vegetation using the JRC Surface Water Monthly Water History dataset and Landsat imagery from 1984 to 2020. The impact of hydrological changes on vegetation was assessed through surveys conducted before and after the 2023 monsoon season. Results indicated a continuous decrease in open water surface area since the 1980s, with a sharp decline post-2003. NDVI analysis showed an inverse relationship between water area reduction and increased vegetation vigor and coverage. Field surveys revealed that hydrological changes directly affected vegetation structure, leading to new herbaceous communities and greater diversity post-monsoon. These findings highlight significant ecosystem changes driven by anthropogenic factors and natural succession, necessitating a comprehensive conservation strategy, including development control, hydrological management, terrestrialization prevention, and long-term monitoring.

Abstract
서 론
연구 방 법
    1. 연구 대상지
    2. 수문-식생 시공간적 변화 분석
    3. 현존식생 조사
결과 및 고 찰
    1. 수문-식생 시공간적 변화 분석
    2. 장마 전후 현존식생 분포 변화
결 론
REFERENCES

• 서현진(국립생태원 복원생태팀) | Hyunjin Seo (Ecological Restoration Team, National Institute of Ecology, Seocheon 33657, Republic of Korea)
• 임치홍(서울여자대학교 생명환경공학과) | Chihong Lim (Major of Bio & Environmental Technology, Seoul Women’s University, Seoul 01797, Republic of Korea) Corresponding author
• 최철현(국립생태원 생태계서비스팀) | Chulhyun Choi (Ecosystem Service Team, National Institute of Ecology, Seocheon 33657, Republic of Korea)
• 이승원(국립생태원 복원생태팀) | Seungwon Lee (Ecological Restoration Team, National Institute of Ecology, Seocheon 33657, Republic of Korea)
• 김남신(국립생태원 생태평가연구실) | Namshin Kim (Division of Ecological Assessment, National Institute of Ecology, Seocheon 33657, Republic of Korea)