Acknowledgement
이 연구는 국립환경과학원의 '기후변화에 의한 자연재해위험 저감방안 연구(V) (NIER-RP2017-050)' 과제로 수행되었습니다. 연구를 도와주신 국립환경과학원 관계자분들과 적절한 조언을 해 주신 익명의 세 분심사위원들께 깊이 감사드립니다.
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This study shows that coastal sand dunes are negatively affected by coastal forests. In South Korea, planting pine trees on the dunes has been carried out to stabilize the dune landscapes and protect residential areas from coastal disasters since the 20th century. However, this strategy could reduce the resilience of dunes. In this study, we selected three monitoring sites with automated weather stations to compare the geomorphological and environmental characteristics between tree-covered and grass-covered dunes at Sohwang-ri, Boryeong-si, Chungnam Province for three years. In addition, we monitored the rates of erosion and deposition using eight pins along the dune crests. We found that the forest affected both wind velocity and direction, resulting in decreased blown sand supply to the dunes in front of the forest. The velocity of the strong winds faster than 5 m/s diminished to 10%-30% of the control sites, and the direction of northwesterly wind were skewed to the north by about 6°. Sand deposition occurred at about 15-20 m away from the pine forest and the amount was only 1/10 of the deposition within the grass-covered dunes. This study suggests that planting trees in coastal dunes is an undesirable strategy with negative impacts on the landscape management.
이 연구는 국립환경과학원의 '기후변화에 의한 자연재해위험 저감방안 연구(V) (NIER-RP2017-050)' 과제로 수행되었습니다. 연구를 도와주신 국립환경과학원 관계자분들과 적절한 조언을 해 주신 익명의 세 분심사위원들께 깊이 감사드립니다.