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Identification of Emerging Roadkill Hotspots on Korean Expressways Using Space–Time Cubes

Author

Listed:
  • Minkyung Kim

    (Department of Environmental Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea)

  • Sangdon Lee

    (Department of Environmental Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea)

Abstract

Collisions with wild animals on high-speed expressways not only lead to roadkill but can also cause accidents that incur considerable human and economic costs. Based on roadkill data from 2004–2019 for four common wildlife species involved in collisions with vehicles on expressways in Korea (water deer, common raccoon dog, Korean hare, and wild boar), the present study conducted optimized hotspot analysis and identified spatiotemporal patterns using a space–time cube (STC) approach. Temporal and spatial differences in the roadkill data were observed between species. Water deer were the most common roadkill species of the four studied, with hotspots in the southern region of the capital area, in the Chungnam region, and in the western Chungbuk and Gangwon-do regions. However, the instances of water deer roadkill over time differed between each region. In addition, it was found that the number of cases of wild boar roadkill has increased recently. In particular, a number of new hotspot areas were observed centered on the metropolitan area Gyeonggi-do, which contains a high population and significant infrastructure. Overall, the emerging hotspot analysis based on STCs was able to determine cold spot and hotspot trends over time, allowing for a more intuitive understanding of spatiotemporal clustering patterns and associated changes than cumulative density-oriented hotspot analysis. As a result, it becomes easier to analyze the causes of roadkill and to establish reduction measures according to priority.

Suggested Citation

  • Minkyung Kim & Sangdon Lee, 2023. "Identification of Emerging Roadkill Hotspots on Korean Expressways Using Space–Time Cubes," IJERPH, MDPI, vol. 20(6), pages 1-12, March.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:6:p:4896-:d:1093386
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    References listed on IDEAS

    as
    1. Yajie Zou & Xinzhi Zhong & Jinjun Tang & Xin Ye & Lingtao Wu & Muhammad Ijaz & Yinhai Wang, 2019. "A Copula-Based Approach for Accommodating the Underreporting Effect in Wildlife‒Vehicle Crash Analysis," Sustainability, MDPI, vol. 11(2), pages 1-13, January.
    2. Hyomin Park & Minkyung Kim & Sangdon Lee, 2021. "Spatial Characteristics of Wildlife-Vehicle Collisions of Water Deer in Korea Expressway," Sustainability, MDPI, vol. 13(24), pages 1-13, December.
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