Journal of The Geomorphological Association of Korea (한국지형학회지)

The Geomorphological Association of Korea (한국지형학회)
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Morphological Characteristics of Forested Coastal Dune Areas Using Direct Topographic Surveys: A Case Study in Dasari, Chungnam

해안림 내부의 지형측량을 통한 충남 다사리 해안사구의 형태적 특징

  • Choi, Kwang Hee (Measuremant and Analysis Division, Yeongsan River Basin Environmental Office) ;
  • Kim, Jang soo (Institute of Regional Development Research, Kongju National University) ;
  • Kong, Hak-Yang (Natural Environment Research Division, National Institute of Environmental Research)
  • 최광희 (영산강유역환경청 측정분석과) ;
  • 김장수 (공주대학교 지역개발연구소) ;
  • 공학양 (국립환경과학원 자연환경연구과)
  • Received : 2017.03.06
  • Accepted : 2017.03.29
  • Published : 2017.03.30
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Abstract

Planting trees is a very common practice in the coastal dunefields of South Korea as a way to stabilize dune landscapes and protect inland residential areas from strong winds and blown sands. On the other hand, disturbing the original foredune environment may deteriorate the ability of coastal landsto recover from coastal erosion after storms, causing a retreat of coastline. However, there is little information of this sort on the surface of forested dunefields. Airborne LiDAR or drone-based mapping is not easily applicable in such areas. In this study, we developed a digital terrain model of Dasari dunefields, Chungnam Province, based on direct topographic surveys with real-time kinematic GPS and total stations. We also analyzed previous two aerial photographs taken in 1947 and 1966, in order to detect an older landforms of the dunefields. Results suggested that there have been little changes in geomorphology of the Dasari dunefields for the last 50 years, despite continued tree plantings. Today, there are remains of U-shaped structures such as blowouts and parabolic dunes in the dunefields.

Keywords

Acknowledgement

Grant : 기후변화에 의한 자연재해위험 저감방안 연구(III)

Supported by : 국립환경과학원, 한국연구재단