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2019 Vol.6, Issue 3 Preview Page

Original Article

GIS-based Assessment of the Lateral Connectivity in the Cheongmi-cheon Stream, South Korea

청미천에서 GIS 기반 횡적 연결성 평가

Seung-Nam Jin1
,
Hyunsuk Cho2
,
Yunsoo Chu3
,
Kang-Hyun Cho4*
진 승남1
,
조 현석2
,
추 연수3
,
조 강현4*
1Researcher, Survey and Research Team, ECOnGEO, Incheon 22170, Korea
2Researcher, Korea Research Institute of Bioscience and Biotechnology, Cheongju 28116, Korea
3Researcher, Wetland Research Team, National Institute of Ecology, Changyuoung 50303, Korea
4Professor, Department of Biological Sciences, Inha University, Incheon 22212, Korea
1수생태공간정보연구소 조사연구팀 연구원
2한국생명공학연구원 연구원
3국립생태원 습지연구팀 연구원
4인하대학교 생명과학과 교수
* Corresponding Author
30 September 2019. pp. 154-162
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Abstract

Lateral connectivity between the channel and the floodplains has been damaged by the levee construction and channelization in most streams of South Korea. The purpose of this study was to develop a technique for easily and remotely assessing lateral connectivity using GIS in the streams and to evaluate the effectiveness of the assessment method by applying it to Cheongmi-cheon Stream, a representative stream in the central Korean Peninsula. The metrics of the lateral connectivity assessment are composed of (1) existence of remaining wetlands and (2) land use property as a habitat quality of the former floodplain outside the levee and (3) existence of levee barrier, (4) connectivity to the stream and (5) connectivity to the upland natural habitats as a connectivity from the channel through floodplain to the upland forest. According to the result of applying the assessment method to Cheongmi-cheon Stream, the lateral connectivity was severely damaged due to the levee construction and land use change in the former floodplain. The GIS-based assessment of the lateral connectivity developed in this study is expected to be used as a useful tool for identifying limitations of current connectivity in various attempts to restore lateral connectivity in riparian ecosystems.

Keywords
Geographical information system
Isolated floodplain
Land use
Lateral connectivity
Stream

대부분의 우리나라의 하천은 제방 축조에 의하여 수로와 홍수터 사이의 횡적연결성이 훼손되어 있다. 본 연구의 목적은 GIS를 이용하여 하천 횡적연결성을 간편하게 원격으로 평가하는 기법을 개발하고 중부지방의 대표적인 하천인 청미천에 적용하여 평가법의 효용성을 평가하는데 있다. 원격평가법의 평가항목은 제내지 서식지 환경 항목으로서 (1) 습지 유지 여부와 (2) 토지이용 특성을 연결성 항목으로서 (3) 제방 차단 여부, (4) 하천과의 연결성 및 (5) 육상 자연서식지와의 연결성으로 구성하였다. 개발된 평가법을 청미천에 시범 적용한 결과에 따르면 청미천의 제내지 옛홍수터는 제방 축조와 토지이용 변화로 횡적연결성이 크게 저하되어 있었다. 또한 GIS 원격 평가법에 의하여 청미천 옛홍수터의 횡적 연결성이 다양한 수준인 것으로 평가되었다. 연구에서 개발된 횡적연결성 원격 평가법은 앞으로 하천의 횡적연결성을 복원하는 다양한 시도에서 현재 연결성의 제한 요인을 파악하는데 유용한 도구로서 이용될 것으로 생각된다.

키워드
격리된 홍수터
지리정보시스템
토지이용
하천
횡적 연결성
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Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 6
  • No :3
  • Pages :154-162
  • Received Date : 2019-09-17
  • Revised Date : 2019-09-17
  • Accepted Date : 2019-09-23
  • DOI :https://doi.org/10.17820/eri.2019.6.3.154
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