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Impact of Urban Agglomeration and Physical and Socioeconomic Factors on Surface Urban Heat Islands in the Pearl River Delta Region, China
被引:19
作者:
Wu, Zhifeng
[1
,2
]
Xu, Yong
[1
,2
]
Cao, Zheng
[1
]
Yang, Jinxin
[1
]
Zhu, Hong
[3
]
机构:
[1] Guangzhou Univ, Sch Geog & Remote Sensing, Guangzhou 510006, Peoples R China
[2] Guangzhou Univ, MNR Key Lab Geoenvironm Monitoring Great Bay Area, Guangzhou 510006, Peoples R China
[3] Guangzhou Univ, Sch Geog & Remote Sensing, Guangdong Prov Ctr Urban & Migrat Studies, Guangzhou 510006, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Urban areas;
Land surface temperature;
Land surface;
Heating systems;
Thermal factors;
Thermal pollution;
Statistics;
Driving factors;
nightlight data;
socioeconomic;
surface urban heat islands (SUHIs);
LOCAL CLIMATE ZONES;
TEMPERATURE;
ALGORITHM;
SCALE;
D O I:
10.1109/JSTARS.2021.3108456
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
An understanding of the driving factors of urban heat islands could improve the urban thermal environment and provide planning strategies for sustainable urban/regional development. We selected Guangdong province in China as a case area, which covers 21 cities and more than 110 million people. We used multitemporal remote sensing data from multiple sources and socioeconomic statistical data to analyze the effects of various drivers of surface urban heat islands (SUHIs). The tested drivers include urban agglomeration, physical indicators (e.g., vegetation and built-up indices), and socioeconomic indicators (e.g., population, gross domestic production, and nightlight intensity). The results show that physical indicators are determinants of daytime SUHIs whereas socioeconomic indicators are determinants of nighttime SUHIs, which indicates that daytime and nighttime SUHIs have different causal mechanisms in this region. Moreover, the results reveal that the influence of urban agglomeration on urban surface temperature is more significant at nighttime than in daytime, which implies that the warming effect of urban agglomeration is stronger at night. Together, the results indicate that joint control of urban size, urbanization level, and socioeconomic activities is crucial to alleviate SUHIs and safeguard sustainable development in this region.
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页码:8815 / 8822
页数:8
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