Journal of the Korean Society of Environmental Restoration Technology (한국환경복원기술학회지)

The Korea Society of Environmental Restoration Technology (한국환경복원기술학회)
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Heat Mitigation Effects of Urban Space based on the Characteristics of Parks and their Surrounding Environment

도시공원 및 주변환경의 특성이 도시공간의 온도저감에 미치는 영향

  • Suh, Jung-Eun (Dept. of Urban Planning and Engineering, Hanyang University) ;
  • Oh, Kyu-Shik (Dept. of Urban Planning and Engineering, Hanyang University)
  • 서정은 (한양대학교 대학원 도시공학과) ;
  • 오규식 (한양대학교 도시공학과)
  • Received : 2020.06.17
  • Accepted : 2020.09.17
  • Published : 2020.10.31
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Abstract

In order to improve the urban thermal environment, efforts are being made to increase green areas in cities that include park construction, planting, and green roofing. Among these efforts, urban parks play an important role not only in improving the urban thermal environment, but also in terms of ecosystem services (serving as resting places for citizens, providing cleaner air quality, reducing noise, etc.). Therefore, the purpose of this study is to suggest planning and management guidelines for urban parks that are effective in improving the thermal environment, by analyzing the urban surface temperature reduction performance of urban parks. To do this, first, land surface temperature was calculated by using Landsat 8 images. Second, the PCI (Park Cool Island) index was calculated to identify the temperature reduction performance of urban parks. Third, the characteristics of parks (area, shape, vegetation) and the surrounding spatial characteristics (land cover, building-related variables, etc.) were identified. Finally, the relationship between the PCI indices (PCI scale, PCI effect, PCI intensity) and the characteristics of the parks and their surroundings were analyzed. The results revealed that the parks consisting of a larger area, simple shape, and higher tree coverage ratio had increased PCI performance, and were advantageous for improving the urban thermal environment. Meanwhile, PCI performance was found to have decreased in areas with a higher impermeable area ratio and building coverage ratio. The outcomes of this study can be used to identify priority areas for planning and management of urban parks and can also be utilized as planning and management guidelines for improving urban thermal environment.

Keywords

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