KOREASCHOLAR

This study investigated the spatial distribution of dissolved organic carbon and the changes in tidal flat soil characteristics following the flooding season in the closed estuary of the Geumgang River basin. We found that after the flooding season, a brackish water area expanded due to increased river discharge, which also introduced low concentrations of dissolved organic carbon from the river. Dissolved inorganic carbon predominantly originated from the sea in proportion to salinity, indicating that in the closed estuary area, dissolved carbon supplied from the sea remained a significant source even after the flooding season. Additionally, a substantial amount of tidally transported silt and clay was deposited near the estuary dam after the flood, and its effects continued to influence the sediment characteristics downstream in the intertidal zone. As an empirical study in the closed estuary, our results are expected to contribute to conservation measures for the World Heritage Site in the area.

Abstract
1. 서 론
2. 연구 방법
    2.1. 조사지역
    2.2. 현장조사 및 실험실 분석
3. 결과 및 고찰
    3.1. 염분도에 의한 기수역의 공간 변화
    3.2. 홍수기 전후 금강하구 용존탄소 농도의 시공간적변화
    3.3. 퇴적토양 입도분포의 공간변이
적 요
CRediT authorship contribution statement
Declaration of Competing Interest
사 사
REFERENCES

• 옥기영(국립생태원 생태조사연구실) | Giyoung Ock (Ecosystem Survey Research, National Institute of Ecology, Seocheon 33657, Republic of Korea) Corresponding author
• 박형근(국립환경과학원 위해성평가연구소) | Hyung-Geun Park (Risk Assessment Division, National Institute of Environmental Research, Incheon 22689, Republic of Korea)
• 손동호(국립생태원 생태조사연구실) | Dongho Sohn (Ecosystem Survey Research, National Institute of Ecology, Seocheon 33657, Republic of Korea)