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Surface urban heat island and its relationship with land cover change in five urban agglomerations in China based on GEE

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Abstract

The development of urbanization has changed the original land cover and exacerbated the urban heat island effect, seriously affecting the sustainable development of the ecological environment. Research on urban heat island characteristics and land cover changes in five major urban agglomerations in China to provide a reference for preventing thermal environmental risks and urban agglomeration construction planning. This paper estimates the surface urban heat island intensity (SUHII) of the five major urban agglomerations in China from 2003 to 2019 based on Google Earth Engine (GEE) through the urban–rural dichotomy, analyzes their trends through the Sen + M–K trend analysis method, and combines the detrending rate matrix to analyze the impact of land cover type shift on urban heat island change. Research shows that (1) the land cover types of the five major urban agglomerations in China have changed considerably from 2003 to 2019, and all five major urban agglomerations in China experienced varying degrees of urban expansion. (2) The annual average value of SUHII decreases in Beijing-Tianjin-Hebei, Yangtze River Delta, and middle reaches of the urban agglomerations, while the annual average value of SUHII increases in Chengdu-Chongqing and Pearl River Delta urban agglomerations. (3) The spatial composition of land cover types in the five major urban agglomerations in China is highly spatially correlated with urban heat islands, with urban land and bare land urban heat islands being the most pronounced. (4) The land cover type shift has the most significant heat island impact on Beijing-Tianjin-Hebei, Yangtze River Delta, and Chengdu-Chongqing urban agglomerations. (5) The land cover change (LCC) with an increasing trend in SUHII is mainly bare land converted to arable land, and water bodies, grassland, forest land, and arable land converted to urban land.

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Data availability

The MODIS datasets used to support the finding of this study were derived from the Google Earth Engine (http://earthengine.google.com). DEM data was provided by NASA’s Jet Propulsion Laboratory (JPL) and has a resolution of 30 m (http://Search.earthdata.nasa.gov. Provincial and municipal administrative boundary data were obtained from the National Basic Geographic Information System (NBGIS) website (http://www.nationalgeographic.org/.

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Acknowledgements

We would like to thank the anonymous reviewers and editors for their valuable comments and suggestions.

Funding

This research was supported by the National Natural Science Foundation of China (grant no. 41461011) and Innovation and Entrepreneurship Talent Project of Lanzhou (grant no. 2019-RC-105).

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Contributions

Conceptualization: HZ and HA. Methodology: YY, JL, JS, ML, and WH. Writing—original draft preparation: YY. Writing—review and editing: HZ. All authors contributed to the study conception and design. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Hua Zhang.

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The authors declare no competing interests.

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Responsible Editor: Philippe Garrigues

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Zhang, H., Yin, Y., An, H. et al. Surface urban heat island and its relationship with land cover change in five urban agglomerations in China based on GEE. Environ Sci Pollut Res 29, 82271–82285 (2022). https://doi.org/10.1007/s11356-022-21452-y

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  • DOI: https://doi.org/10.1007/s11356-022-21452-y

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