DOI QR코드

DOI QR Code

Habitat Suitability Assessment of the Saemangeum Lake Area for Eurasian Otter(Lutra lutra) and Correlation Analysis with Spatial Variables

새만금호 일대 수달의 서식적합성 평가 및 공간변수와의 상관성 분석

  • Shin, Hwa-Yong (Department of Environmental Forest Resources, Chungnam National University) ;
  • Shin, Gee-Hoon (Department of Environmental Planning, Keimyung University) ;
  • Han, Sung-Yong (Korea Otter Research Center) ;
  • Rho, Paikho (Department of Environmental Planning, Keimyung University) ;
  • Lee, Joon-Woo (Department of Environmental Forest Resources, Chungnam National University)
  • Received : 2020.07.24
  • Accepted : 2020.08.05
  • Published : 2020.08.31

Abstract

This study was conducted to examine the impact of the correlation between habitat suitability of the Saemangeum lake area for otters and spatial variables (watersides, wetlands, farmlands, urban areas, roads, etc.) on the inhabitation of otters. As a result of the habitat suitability analysis, it was found that 380grids of 1097 grids (34.6%) studied are most suitable and suitable, whereas 413 grids of 1097 grids (37.7%) of the total are marginal and unsuitable. Comparatively analyzing otter traces data against for each spatial variable in the Saemangeum area revealed that the distance to the road or man-made areas is directly proportional to the number of otter traces, while more traces of otters were found areas close to waters. Despite the impact from the internal construction of Saemangeum lake, there found 2 to 6 times more otter traces in the area farthest from the urban areas and roads compared to the area nearest to the urban areas and roads. Thus, when restoring habitats for otters, a minimum of 500(m) distance to roads or urban areas, which can be considered as a threat to the habitats, must be secured.

본 연구는 새만금호 일대 수달의 서식지적합도 분석과 공간변수(수역, 습지, 농경지, 시가지, 도로 등)와의 상관성이 수달 서식에 미치는 영향을 파악하기 위하여 이루어졌다. 서식지적합성 분석결과, 전체 1097개 격자 중 1등급과 2등급이 380개 격자로 전체 34.6%로 확인되었고 4등급과 5등급이 413개 격자로 전체 37.7%로 비교적 낮은 것으로 확인되었다. 새만금 일대의 공간변수 별 수달 서식흔적과의 거리를 비교분석한 결과, 도로와 시가지는 거리가 멀수록 수달의 흔적이 확인되는 것으로 확인되었고 수역과의 거리는 가까울수록 흔적이 확인되었다. 새만금호 내부 공사로 인한 영향은 있으나 수역과 도로의 이격거리를 보면 시가지와 도로에서 이격거리가 근접한 지역과 가장 먼 지역과의 흔적차이가 2배에서 6배 이상 나타나는 것으로 확인되었다. 이는 수달의 서식지 복원시 위협요인으로 작용하는 도로와 시가지는 최소한 500(m) 이상 이격거리가 필요하다고 판단된다.

Keywords

References

  1. Baek MJ, Choi HY, Yoo SH. 2015. Recognition of the impact of the Saemangeum development project on the marine environment. Journal of Ocean Environment and Safety 31(5): 492-500.
  2. Cha SM. 2001. The eating habits of otters inhabiting the Seomjin River and the South Sea. Kyungnam University graduate school master's thesis.
  3. Choi JH, Oh CS, Cho YC, An CH. 2013. Consideration on the operation of management water level and environmental change in Saemangeum Lake water repellent construction. Journal of the Korean Society for Marine Environmental Energy 16(4): 290-298. https://doi.org/10.7846/JKOSMEE.2013.16.4.290
  4. Franklin J. 2009. Mapping species distributions spatial inference and prediction. Cambridge University Press. Cambridge. https://earthexplorer.usgs.gov/
  5. International Union Conservation Nature (IUCN). 2014. IUCN Red List of Threatened Species. International Union for Conservation of Nature and Natural Resources.
  6. Jang NJ, Jeong HO, Park SW, Kwak DH. 2017. Saemangeum SWG technology demand analysis and basic design of test bed. Korean Society of Civil Engineers oral presentation, pp. 1687-1688.
  7. Jeong JC, Cho YS. 2004. Habitat Analysis of Otgokcheon Otter in Bonghwa-gun, Gyeongbuk, using GIS, Journal of Korea Spatial Information System Society 12(1): 29-42.
  8. Kim BM, Chung LL. 1998. A Study on the fish community from the Mangyong River System. Korean J. Limnol. 31: 191-203.
  9. Kim JH, Yoon JD, In DS, Jang MH. 2011. Changes of fish community in the Mankyeong and the Dongjin River after construction of Saemangeum dike. J. Korean Nat. 4: 111-119. https://doi.org/10.7229/jkn.2011.4.2.111
  10. Kim IS, Yang H. 2001. Fish community changes of the Buan Dam, Korea. Korean J. Ecol. 24: 45-50.
  11. Kim J. 2007. Impact of large-scale reclamation projects on the lives of local residents: focusing on the Saemangeum project. Korean Society for Environmental Sociology 11(2): 285-316.
  12. Ko CH, Ryu JS, Kim JS. 2010. Saemangeum: History and conflict, Journal of the Korean Society for Marine Environmental Energy. 13(4): 327-334.
  13. Manson CF, Macdonald SM. 1987. Acidification and otter (Lurta lutra) distribution on a British River. Mammalia 51: 81-87.
  14. Ministry for Food, Agriculture, Forestry and Fisheries. 2004. Ecological changes in the Saemangeum water and reclaimed land areas Kim et al. 1998.
  15. Na JE, Lee HY. 2011. Distribution of birds attached to the tidal flats of Saemangeum Lake. Journal of Environmental Biology 29(1): 46-51.
  16. Park SH, Lee JW, Ki, JH, Baek SH, Yoon JD, Cho KR, Jang MH. 2013. Distribution of fish according to salinity in Saemangeum. Korean Journal of Environmental Biology 31(4): 411-418. https://doi.org/10.11626/KJEB.2013.31.4.411
  17. Shim KS, Lee CR. 1999. A fish merchant around Saemangeum. Korean Journal of Environmental Biology 17(3): 293-303.
  18. Shin JH, No BH. 2017. Analysis of the effect of river surface space and water change diameter on the appearance of otters in the Nakdong River area. Korean Society of Environmental Sciences 26(12): 1341-1353.

Cited by

  1. 수달의 보전을 위한 전국자연환경조사 시계열 자료 기반 잠재 서식적합지역 분석 - 강원도를 대상으로 - vol.35, pp.1, 2020, https://doi.org/10.13047/kjee.2021.35.1.24