Green-infra Strategies for Mitigating Urban Heat Island

도시열섬현상완화를 위한 그린인프라 전략

  • Park, Chae-Yeon (Interdisciplinary Program in Landscape Architecture, Seoul National University) ;
  • Lee, Dong-Kun (Department of Landscape Architecture and Rural system Engineering, Seoul National University) ;
  • Kwon, Eu-gene (Interdisciplinary Program in Landscape Architecture, Seoul National University) ;
  • Her, Min-ju (Graduate School, Seoul National University)
  • 박채연 (서울대학교 협동과정조경학) ;
  • 이동근 (서울대학교 조경.지역시스템 공학부) ;
  • 권유진 (서울대학교 협동과정조경학) ;
  • 허민주 (서울대학교 대학원)
  • Received : 2017.10.12
  • Accepted : 2017.10.23
  • Published : 2017.10.31


Because of lack of accurate understanding of the mechanism of urban heat island (UHI) phenomenon and lack of scientific discussion, it is hard to come up with effective measures to mitigate UHI phenomenon. This study systematically described the UHI and suggested the solutions using green-infrastructure (green-infra). The factors that control UHI are very diverse: radiant heat flux, latent heat flux, storage heat flux, and artificial heat flux, and the air temperature is formed by the combination effect of radiation, conduction and convection. Green-infra strategies can improve thermal environment by reducing radiant heat flux (the albedo effect, the shade effect), increasing latent heat flux (the evapotranspiration effect), and creating a wind path (cooling air flow). As a result of measurement, green-infra could reduce radiant heat flux as $270W/m^2$ due to shadow effect and produce $170W/m^2$ latent heat flux due to evaporation. Finally, green-infra can be applied differently on the macro(urban) scale and micro scale, therefore, we should plan and design green-infra after the target objects of structures are set.


Supported by : 국토교통과학기술진흥원


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