Journal of the Korean Association of Geographic Information Studies (한국지리정보학회지)

The Korean Association of Geographic Information Studies (한국지리정보학회)
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The Impact of Overpass Wildlife Crossings Structure on Roadkill Incidence

육교형 생태통로 유무에 따른 야생동물 로드킬 발생 현황

  • Sehee Kim (Ecological Restoration Team, National Institution of Ecology) ;
  • Kihyun Kim (Ecological Restoration Team, National Institution of Ecology) ;
  • Jiyoun Kim (Ecological Restoration Team, National Institution of Ecology) ;
  • Hanbi Lee (Ecological Restoration Team, National Institution of Ecology) ;
  • Sangmin Park (Ecological Restoration Team, National Institution of Ecology) ;
  • Euigeun Song (Ecological Restoration Team, National Institution of Ecology)
  • 김세희 (국립생태원 복원생태팀) ;
  • 김기현 (국립생태원 복원생태팀) ;
  • 김지윤 (국립생태원 복원생태팀) ;
  • 이한비 (국립생태원 복원생태팀) ;
  • 박상민 (국립생태원 복원생태팀) ;
  • 송의근 (국립생태원 복원생태팀)
  • Received : 2024.12.05
  • Accepted : 2024.12.13
  • Published : 2024.12.30
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Abstract

This study analyzed the impact of overpass-type wildlife crossings and environmental factors on wildlife roadkill occurrences in Gyeongsangbuk-do, Republic of Korea. Using roadkill data from 2021 to 2023, the study examined the effect of overpass-type wildlife crossings on roadkill occurrences and investigated the correlation between land cover types, NDVI, and roadkill presence. The average number of roadkill incidents in areas with overpasses was 9.52, which was significantly lower than the 15.83 incidents recorded in areas without overpasses. Furthermore, the variability in roadkill occurrences was found to be lower in areas with overpasses. A logistic regression model examining the relationship between roadkill presence and surface environmental factors showed an AUC value of 0.77, indicating a satisfactory level of predictive power. Roadkill occurrences were positively correlated with urban/built-up areas, agricultural lands, and forest areas, while negative correlations were observed with water bodies and the r_NDVI mean. These results confirm the effectiveness of overpass-type wildlife crossings in reducing roadkill. To develop effective roadkill mitigation strategies, it is necessary to consider habitat environmental factors when designing and managing wildlife crossings to develop effective roadkill mitigation strategies.

본 연구는 경상북도 지역에서 육교형 생태통로와 환경 요인이 야생동물 로드킬 발생에 미치는 영향을 분석하였다. 2021년부터 2023년까지의 로드킬 데이터를 활용하여 육교형 생태통로가 로드킬 발생수에 미치는 영향를 분석하고, 토지 피복 유형 및 NDVI와 로드킬 발생유무의 상관관계를 조사하였다. 육교형 생태통로가 있는 지역에서 평균 로드킬 발생 건수는 9.52건으로, 생태통로가 없는 지역의 15.83건에 비해 유의미하게 낮았다. 또한, 생태통로가 있는 지역의 로드킬 발생 변동성이 더 적은 것으로 확인되었다. 한편, 로드킬 발생 유무와 지표환경요인들 간의 로지스틱 회귀 모델은 AUC 값이 0.77로 나타나 예측력이 양호하게 나타났다. 로드킬 발생은 시가화지역, 농경지, 산림 면적과 양의 상관관계를 보인 반면, 수역과 r_NDVI mean과는 음의 상관관계를 보였다. 결과적으로 육교형 생태통로가 로드킬 감소에 효과가 있음을 확인하였으며, 효과적인 로드킬 저감 방안을 수립하기 위해서는 생태통로의 설치 및 관리 시 서식지 환경 요인을 고려할 필요가 있을 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 환경부 및 국립생태원(NIE)의 지원으로 수행되었습니다(NIE-B-2024-05).

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