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作者

You Jin Kwon;Dong Kun Lee;Jun-Hyun Kim;Kyushik Oh

来源

CITIES,Vol.116,Issue1,Article 103276

语言

英文

关键字

Sensible heat flux;Land cover;Thermal zoning;Thermal environmental analysis;Energy budget

作者单位

Living Environment Research Center, Korea Institute of Civil engineering and building Technology, Korea, 1190, Simindae-Ro, Ilsanseo-Gu, Goyang-Si Gyeonggi-do, 411-712, 10223, Republic of Korea;Department of Landscape Architecture and Rural System Engineering, Seoul National University, Korea, 200 Gwanak-ro 1, room 9219, Gwanak-gu, Seoul 08826, Republic of Korea;School of Planning, Design & Construction, Michigan State University, 552 W Circle Dr., Rm 201H, East Lansing, MI 48824, United States of America;Department of Urban Planning and Engineering, Engineering Science & Technical Building, Hanyang University, 222 Wangsimni-ro, Seongdong-gu 04763, Republic of Korea;Living Environment Research Center, Korea Institute of Civil engineering and building Technology, Korea, 1190, Simindae-Ro, Ilsanseo-Gu, Goyang-Si Gyeonggi-do, 411-712, 10223, Republic of Korea;Department of Landscape Architecture and Rural System Engineering, Seoul National University, Korea, 200 Gwanak-ro 1, room 9219, Gwanak-gu, Seoul 08826, Republic of Korea;School of Planning, Design & Construction, Michigan State University, 552 W Circle Dr., Rm 201H, East Lansing, MI 48824, United States of America;Department of Urban Planning and Engineering, Engineering Science & Technical Building, Hanyang University, 222 Wangsimni-ro, Seongdong-gu 04763, Republic of Korea

摘要

This study developed a method of improving Seoul's thermal environment by focusing on sensible heat flux and types of land-use and cover to mitigate the urban heat island (UHI) effect. First, the relationships between the sensible heat flux in summer and (a) the land cover ratio, and (b) the heights and densities of buildings in different land-use zoning districts were identified and analysed. The rationale for improving the thermal environment was then considered based on the physical relationships among heat, space, and the thermal-environment type. Energy budget distribution data were then used to identify an optimised land-use plan to mitigate the UHI effect. Spatial data describing the physical elements in land-use zoning were then generated using high-resolution images of the sensible heat flux distribution and directly correlated to existing land-use and thermal comfort. Finally, a K-means clustering analysis was employed to determine the unfavourable and favourable thermal areas in each zoning district based on correlated sensible heat flux data. The results indicate that the highest concentration of unfavourable thermal areas of all studied zoning districts was neighbourhood commercial districts, which accounted for 9.9% of the total identified unfavourable thermal areas, whereas the lowest level of sensible heat flux was observed in single-family residential areas. This study thus developed a basis for a spatial planning framework that can be used to improve the thermal conditions of cities and encourage summer energy savings using zoning-based requirements.