Urban Green Space Analysis and its Effect on the Surface Urban Heat Island Phenomenon in Denpasar City, Bali

IF 1.7 Q2 FORESTRY Forest and Society Pub Date : 2023-04-04 DOI:10.24259/fs.v7i1.24526
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Abstract

The Urbanization process in Indonesia’s big cities causes adverse environmental impacts such as climate change and land cover change. Urban climate change causes the warming of urban areas compared to rural areas; it is called Urban Heat Island phenomenon. Loss of vegetation due to urban development is one of several causes that contribute to urban heat islands. This study examines the availability of green spaces and their effects on the surface urban heat island in Denpasar city. This study used the spatial approach for Urban Green space mapping with digitizing methods. Landsat 8's thermal band is used for land surface temperature mapping and to conduct a spatial pattern analysis of the SUHI phenomena. The Global Moran’s Index and Local Indicator of Spatial Association (LISA) were used to determine the correlation between urban green space and SUHI. The study result shows that Denpasar City's urban green space area covers 28.22 km2. That's equal to 22.1% of the Denpasar City Administrative area. Denpasar Selatan district has the largest urban green space cover, with 14.19 km2 covered, or 50.27% of all the green space in Denpasar City. The majority of Denpasar is affected by UHI occurrences, except the northern region of North Denpasar and the southern region of South Denpasar. The maximum UHI level reaches 4-5°C, located on the east side of South Denpasar, especially in the Sanur coastal area. According to the spatial pattern study, the association between urban green space and SUHI only exists on the north side of Denpasar. The correlation between low-SUHI intensity clusters and high cover of green space is shown in the same area. However, the association between High-UHI intensity and low green space cover has not significantly happened. It indicated that other factors besides green space could affect the land surface temperature.
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巴厘岛登巴萨市城市绿地分析及其对地表热岛现象的影响
印度尼西亚大城市的城市化进程造成了气候变化、土地覆盖变化等不利的环境影响。城市气候变化导致城市地区比农村地区变暖;它被称为城市热岛现象。城市发展导致的植被损失是造成城市热岛的几个原因之一。本研究考察了登巴萨市绿地的可用性及其对地表城市热岛的影响。本研究采用空间方法对城市绿地进行数字化制图。Landsat 8的热波段用于地表温度测绘,并对SUHI现象进行空间格局分析。利用全球Moran’s指数和局部空间关联指数(LISA)来确定城市绿地与SUHI的相关性。研究结果表明,登巴萨市城市绿地面积为28.22 km2。这相当于登巴萨市行政区域的22.1%。登巴萨塞拉坦区拥有最大的城市绿地面积,面积为14.19 km2,占登巴萨市绿地总面积的50.27%。除了北登巴萨北部地区和南登巴萨南部地区外,登巴萨的大部分地区都受到热岛事件的影响。最大热岛水平为4-5°C,位于南登巴萨东侧,特别是在Sanur沿海地区。空间格局研究表明,城市绿地与SUHI之间的关联仅存在于登巴萨北侧。在同一区域内,低suhi强度集群与高绿地覆盖率之间存在相关性。然而,高热岛强度与低绿地覆盖之间的相关性不显著。这表明除了绿地面积外,其他因素也会影响地表温度。
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来源期刊
Forest and Society
Forest and Society FORESTRY-
CiteScore
4.60
自引率
35.30%
发文量
37
审稿时长
23 weeks
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