[논문]수원시 녹지 조성 및 주변 환경에 따른 녹지 냉각 효과의 변화

이승연; 전성우

doi:10.14249/eia.2023.32.3.176

[국내논문] 수원시 녹지 조성 및 주변 환경에 따른 녹지 냉각 효과의 변화
Variation of Green Space Cooling Effect Influenced by Its Composition and Surroundings in Suwon City 원문보기

환경영향평가 = Journal of environmental impact assessment, v.32 no.3, 2023년, pp.176 - 186

이승연 (한국환경연구원 환경평가본부) , 전성우 (고려대학교 환경생태공학과)

초록
AI-Helper

도시열섬(Urban Heat Island; UHI)은 도시가 인근 지역에 비해 뜨거운 현상을 의미하며 도시 내부의 건물의 구성, 토지피복의 종류 등이 변화하기 때문에 발생한다. 도시열섬을 완화하기 위한 방법으로 녹지공간의 조성인데, 녹지가 제공하는 냉각효과의 경우 녹지의 내부 구성 요소 및 녹지의 크기에 따라 변화한다. 본 연구는 다양한 토지피복으로 구성된 수원시를 대상으로 녹지의 크기와 녹지를 구성하는 요소들에 따른 냉각효과의 차이를 확인하고, 녹지의 인근 토지피복에 따라 녹지로부터 제공되는 냉각효과의 차이를 고찰하고자 한다. 연구 결과, 녹지의 초기 온도는 산림의 비율이 높을수록, 그리고 호수가 존재할수록 낮아졌다. 냉각효과 중 하나인 냉각강도는 숲의 비율이 높을수록 강해졌지만, 초기 온도가 더 큰 영향을 미쳤다. 다만 냉각 거리는 녹지의 크기나 구성에 따라 달라지지 않음을 확인했다. 본 연구의 결과는 도시의 계획 시 열섬을 완화하기 위한 녹지 설계 방안을 제시한 다는 점에 의의를 가진다.

Abstract ▼ AI-Helper

Urban Heat Island (UHI) is caused by an energy imbalance in urban areas, where building design and land cover contribute to its amplification. To mitigate UHI, increasing green space is one of the well known and the most effective approach. This study aims aimed to identify specific components of green spaces that lower temperatures and demonstrate the cooling effects based on their size and composition. Forests within green spaces have had a greater impact on temperature reduction due to shading and blocking solar radiation. Although lakes also contributed to temperature reduction, the effect to cooling intensity was not significant. The cooling distance does not depended on green space size or composition. The study emphasizes that initial temperature has a strongerinfluence on cooling intensity than green space size, highlighting the importance of vegetation type within green spaces to achieve a cooling effect. These findings provide valuable insights for urban planning and the design of green spaces to mitigate the effects of the urban heat island.

Keyword

표/그림 (5)

그림 Figure 1. Location of Suwon City, the study area, and biotope types near study area. (a) Dark grey indicates the realm of Suwon City, black indicates low rise building, red dotted line indicates the boundary of study area (i.e. 250m buffer from area where low rise building locates) (b) Biotope types near low rise buildings. (c) Green spaces(GSs) that this study investigate. Note that each number labeled on GSs is the unique ID assigned for the study.
그림 Figure 2. Methodology of calculating cooling effects (a) Buffer zones with 30m interval were set around green area (b) Graphical explanation of cooling distance (CD) and cooling intensity (CI). Each color of dots in (b) corresponds to the buffer zones in (a). Green dots located on 0m is the initial temperature (i.e., mean temperature of green area) and the yellow dot located on 150m is the first peak of the temperature curve. In this case (Green Space ID 06), CD is 150m and CI is 3.46℃
그림 Figure 3. (a) Temperature of all GSs and their surrounding buffer zones. Dark green large dots represent initial temperature of GS and green small dots with dark green perimeter indicates temperature of buffer zones. Yellow dots are the temperature at cooling distance. Note that Green Space ID indicates the unique number of each green space corresponding to Figure 1 (c). (b) Simple regression result between initial temperature and size of GS in ha. (c) and (d) depict the simple regression result between CE variables and size of GS in ha. Note that Black dots for all simple regression results indicate park and green space, dark green dot shows forest, and blue dots represents GS including lake.
표 Table 1. Area and composition of Green Space by ID
표 Table 2. Simple and multiple regression result

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