中国地理科学 ›› 2019, Vol. 29 ›› Issue (6): 905-916.doi: 10.1007/s11769-019-1080-9

• 论文 •    下一篇

Monitoring Intra-annual Spatiotemporal Changes in Urban Heat Islands in 1449 Cities in China Based on Remote Sensing

LI Yuanzheng1,2,3, WANG Lan4, ZHANG Liping5, LIU Min1,3, ZHAO Guosong6   

  1. 1. School of Resources and Environment, Henan University of Economics and Law, Zhengzhou 450046, China;
    2. Academician Labor-atory for Urban and Rural Spatial Data Mining of Henan Province, Henan University of Economics and Law, Zhengzhou 450046, China;
    3. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
    4. Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;
    5. Center for Environmental Zoning, Chinese Academy for Environmental Planning, Ministry of Environmental Protection of China, Beijing 100012, China;
    6. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101
  • 收稿日期:2019-03-08 出版日期:2019-12-27 发布日期:2019-11-12
  • 通讯作者: LIU Min E-mail:liuminrcees@126.com
  • 基金资助:

    Under the auspices of National Natural Science Foundation of China (No. 41901238, 41701501), Social Science Fund of China (General Projects) (No.17BJL065), Key Scientific and Technological Project of Henan Province (No. 192102310003), Edu-cational Commission of Henan Province (No. 2019-ZZJH-094)

Monitoring Intra-annual Spatiotemporal Changes in Urban Heat Islands in 1449 Cities in China Based on Remote Sensing

LI Yuanzheng1,2,3, WANG Lan4, ZHANG Liping5, LIU Min1,3, ZHAO Guosong6   

  1. 1. School of Resources and Environment, Henan University of Economics and Law, Zhengzhou 450046, China;
    2. Academician Labor-atory for Urban and Rural Spatial Data Mining of Henan Province, Henan University of Economics and Law, Zhengzhou 450046, China;
    3. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
    4. Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;
    5. Center for Environmental Zoning, Chinese Academy for Environmental Planning, Ministry of Environmental Protection of China, Beijing 100012, China;
    6. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101
  • Received:2019-03-08 Online:2019-12-27 Published:2019-11-12
  • Contact: LIU Min E-mail:liuminrcees@126.com
  • Supported by:

    Under the auspices of National Natural Science Foundation of China (No. 41901238, 41701501), Social Science Fund of China (General Projects) (No.17BJL065), Key Scientific and Technological Project of Henan Province (No. 192102310003), Edu-cational Commission of Henan Province (No. 2019-ZZJH-094)

摘要:

This study aimed to accurately study the intra-annual spatiotemporal variation in the surface urban heat island intensities (SUHIIs) in 1449 cities in China. First, China was divided into five environmental regions. Then, the SUHIIs were accurately calculated based on the modified definitions of the city extents and their corresponding nearby rural areas. Finally, we explored the spatiotemporal variation of the mean, maximum, and minimum values, and ranges of SUHIIs from several aspects. The results showed that larger annual mean daytime SUHIIs occurred in hot-humid South China and cold-humid northeastern China, and the smallest occurred in arid and semiarid west China. The seasonal order of the SUHIIs was summer > spring > autumn > winter in all the temperate regions except west China. The SUHIIs were obviously larger during the rainy season than the dry season in the tropical region. Nevertheless, significant differences were not observed between the two seasons within the rainy or dry periods. During the daytime, the maximum SUHIIs mostly occurred in summer in each region, while the minimum occurred in winter. A few cold island phenomena existed during the nighttime. The maximum SUHIIs were generally significantly positively correlated with the minimum SUHIIs during the daytime, nighttime and all-day in all environmental regions throughout the year and the four seasons. Moreover, significant correlation scarcely existed between the daytime and nighttime ranges of the SUHIIs. In addition, the daytime SUHIIs were also insignificantly correlated with the nighttime SUHIIs in half of the cases.

关键词: surface urban heat island intensities (SUHIIs), land surface temperature (LST), seasonal changes, maximum and minimum SUHII, cold island, China

Abstract:

This study aimed to accurately study the intra-annual spatiotemporal variation in the surface urban heat island intensities (SUHIIs) in 1449 cities in China. First, China was divided into five environmental regions. Then, the SUHIIs were accurately calculated based on the modified definitions of the city extents and their corresponding nearby rural areas. Finally, we explored the spatiotemporal variation of the mean, maximum, and minimum values, and ranges of SUHIIs from several aspects. The results showed that larger annual mean daytime SUHIIs occurred in hot-humid South China and cold-humid northeastern China, and the smallest occurred in arid and semiarid west China. The seasonal order of the SUHIIs was summer > spring > autumn > winter in all the temperate regions except west China. The SUHIIs were obviously larger during the rainy season than the dry season in the tropical region. Nevertheless, significant differences were not observed between the two seasons within the rainy or dry periods. During the daytime, the maximum SUHIIs mostly occurred in summer in each region, while the minimum occurred in winter. A few cold island phenomena existed during the nighttime. The maximum SUHIIs were generally significantly positively correlated with the minimum SUHIIs during the daytime, nighttime and all-day in all environmental regions throughout the year and the four seasons. Moreover, significant correlation scarcely existed between the daytime and nighttime ranges of the SUHIIs. In addition, the daytime SUHIIs were also insignificantly correlated with the nighttime SUHIIs in half of the cases.

Key words: surface urban heat island intensities (SUHIIs), land surface temperature (LST), seasonal changes, maximum and minimum SUHII, cold island, China