气候变化领域集成服务门户(CCPortal): Urban Morphology Influencing the Urban Heat Island in the High-Density City of Xi'an Based on the Local Climate Zone

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DOI	10.3390/su16103946
	Urban Morphology Influencing the Urban Heat Island in the High-Density City of Xi'an Based on the Local Climate Zone
	Wang, Chongqing; Zhang, He; Ma, Zhongxu; Yang, Huan; Jia, Wenxiao
发表日期	2024
EISSN	2071-1050
起始页码	16
结束页码	10
卷号	16 期号:10
英文摘要	Urban form plays a critical role in enhancing urban climate resilience amidst the challenges of escalating global climate change and recurrent high-temperature heatwaves. Therefore, it is crucial to study the correlation between urban spatial form factors and land surface temperature (LST). This study utilized Landsat 8 remote sensing data to estimate LST. Random forest nonlinear analysis was employed to investigate the interaction between the urban heat island (UHI) and six urban morphological factors: building density (BD), floor area ratio (FAR), building height (BH), fractional vegetation coverage (FVC), sky view factor (SVF), and impervious surface fraction (ISF), within the framework of local climate zones (LCZs). Key findings revealed that Xi'an exhibited a significant urban heat island effect, with over 10% of the study area experiencing temperatures exceeding 40 degrees C. Notably, the average LST of building-class LCZs (1-6) was 3.5 degrees C higher than that of land cover-class LCZs (A-C). Specifically, compact LCZs (1-3) had an average LST 3.02 degrees C higher than open LCZs (4-6). FVC contributed the most to the variation in LST, while FAR contributed the least. ISF and BD were found to have a positive impact on LST, while FVC and BH had a negative influence. Moreover, SVF was observed to positively influence LST in the compact classes (LCZ2-3) and open low-rise class (LCZ6). In the open mid-rise class (LCZ5), SVF and LST showed a U-shaped relationship. There is an inverted U-shaped relationship between FAR and LST, with the inflection point occurring at 1.5. The results of nonlinear analysis were beneficial in illustrating the complex relationships between LST and its driving factors. The study's results highlight the effectiveness of utilizing LCZ as a detailed approach to explore the relationship between urban morphology and urban heat islands. Recommendations for enhancing urban climate resilience include strategies such as increasing vegetation coverage, regulating building heights, organizing buildings in compact LCZs in an L or I shape, and adopting an O or C configuration for buildings in open LCZs to aid planners in developing sustainable urban environments.
英文关键词	spectral indexes; land surface temperature; urban heat island; local climate zone; downscaling; thermal environment network
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS记录号	WOS:001231591700001
来源期刊	SUSTAINABILITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305308
作者单位	Northwest A&F University - China
推荐引用方式 GB/T 7714	Wang, Chongqing,Zhang, He,Ma, Zhongxu,et al. Urban Morphology Influencing the Urban Heat Island in the High-Density City of Xi'an Based on the Local Climate Zone[J],2024,16(10).
APA	Wang, Chongqing,Zhang, He,Ma, Zhongxu,Yang, Huan,&Jia, Wenxiao.(2024).Urban Morphology Influencing the Urban Heat Island in the High-Density City of Xi'an Based on the Local Climate Zone.SUSTAINABILITY,16(10).
MLA	Wang, Chongqing,et al."Urban Morphology Influencing the Urban Heat Island in the High-Density City of Xi'an Based on the Local Climate Zone".SUSTAINABILITY 16.10(2024).