This study analyzed changes in annual growth and carbon dioxide uptake before and after planting of four major deciduous broadleaf tree species (Prunus serrulata Var. spontanea, Zelkova serrata, Chionanthus retusus, and Quercus acutissima) planted as part of the Geumgang Riverside Ecological Belt Development Project. The study site was selected as an ecologically restored site that had been established for at least 10 years. The diameter at breast height and tree age were measured, and annual growth rates were calculated through tree ring analysis. Based on these data, annual carbon dioxide (CO2) uptake was estimated using the IPCC (2006) formula. The study results showed that all four species experienced a sharp decline in growth immediately after planting, followed by a gradual recovery, though the timeframes varied for each species. Based on the growth analysis results, the average annual CO2 uptake by species was calculated to range from 5.48 to 14.38 kg CO2 y-1, with cherry trees showing the highest values. CO2 uptake before and after planting increased for all four species, with the rate of increase accelerating over time. Furthermore, the time required to recover or exceed the CO2 absorption level before planting varied depending on the tree species, ranging from two years at the shortest to six years at the longest. The zelkova tree took the longest at six years. As such, tree growth is a crucial factor influencing annual CO2 absorption, demonstrating the need to differentiate management periods based on the growth characteristics and recovery rate of each tree species. In particular, trees in urban and riparian ecological restoration areas provide not only direct carbon absorption but also indirect greenhouse gas reduction effects, such as heat island mitigation and energy savings. Therefore, they can serve as important baseline data for establishing future management strategies for urban forests and ecological restoration areas.

Abstract
서 론
연구내용 및 방 법
결과 및 고 찰
    1. 생장량 분석 결과
    2. 수종별 연간 이산화탄소 흡수량 산정
    3. 식재 전 . 후 연간 흡수량 비교
결론 및 제 언
적 요
REFERENCES

• 배순형(한국환경보전원) | Soon-Hyoung Bae (Korea Environmental Conservation Institute, Daejeon 34013, Republic of Korea)
• 정소영(상명대학교 그린스마트학과 대학원) | So-Young Jung (Department of Green Smart City, Graduate School, Sangmyung University 03016, Republic of Korea)
• 김한(국립생태원 습지센터) | Han Kim (Wetland Center, National Institute of Ecology, Changnyeong 50303, Republic of Korea) Corresponding author