4대강 사 업 후 낙 동강 중·하류의 하 중도와 제외지 지형변화
(주)코리아스칼라
- 최초 등록일
- 2016.04.02
- 최종 저작일
- 2015.09
- 7페이지/ 어도비 PDF
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서지정보
ㆍ발행기관 : 한국하천호수학회
ㆍ수록지정보 : 생태와 환경 / 48권 / 3호
ㆍ저자명 : 임란영, 김지윤, 최종윤, 도윤호, 주기재
목차
서 론
재료 및 방 법
결과 및 고 찰
사사
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영어 초록
River channel dredging and riparian development have been influenced morphology and quantity of natural river habitat. We compared distribution of riverside land and alluvial island in the Nakdong River with field survey and remote sensing analysis after the 4 Large River Project in South Korea. We digitized geomorphological elements, includes main channel, riverside land, and alluvial island by using georeferenced aerial photos taken in pre-dredging (2008) and post-dredging (2012) periods. Field survey was followed in 2012 for a ground truth of digitized boundaries and identification of newly constructed wetland types such as pond, channel, branch, and riverine type. We found that during the dredging period, riverside land and alluvial island were lost by 20.2% and 72.7%, respectively. Modification rate of riverside land was higher in the section of river kilometer 50~90, 140~180, and 210~270. Alluvial island had higher change rate in the section of river kilometer 50~70, 190~210, and 270~310. Average change rate for the riverside land and alluvial island was - 1.02±0.14 km² ·10 km¯¹ and - 0.05±0.05 km² ·10 km¯¹, respectively. Channel shaped wetlands (72.5%) constituted large portion of newly constructed wetlands.
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