Article Details

Title · Authors · Abstract · Keywords · DOI · References

Research on Spatial Pattern and Driving Factors of Surface Thermal Environment in Guangzhou

WANG Lihui1,2, NIE Zichuan1,2, ZHAO Lihua1,2

(1.State Key Laboratory of Subtropical Building and Urban Science, South China University of Technology, Guangzhou 510640, China; 2.Guangzhou Municipal Key Laboratory of Landscape Architecture, Guangzhou 510640, China)

Section：Information Application · Vol. 2025, Issue 7 · Pages：161-167 · 2096-4706（2025）07-0161-07 · CLC number：TP391；TU984 · Document code：A · DOI：10.19850/j.cnki.2096-4706.2025.07.030

Abstract

In order to explore the spatial heterogeneity of urban thermal environment and its response to driving factors, the Land Surface Temperature (LST) during the heat wave in Guangzhou in 2022 is taken as the research object, and the Ordinary Least Squares (OLS) and Geographically Weighted Regression (GWR) model are used to analyze the influence of spatial form, land use and social development factors on the thermal environment. The results show that the R2 of the GWR model is 0.6, and the R2 of the OLS model is only 0.3. The relationship performance between the driving factors of the GWR fitting and the thermal environment is better. Building density, proportion of impervious surface and road length are positively correlated with LST. The average value of DEM and vegetation coverage are negatively correlated with LST. The correlation between building height mean and standard deviation, DEM standard deviation, Nighttime Light Index and LST is different in different temperature zones. The results can provide scientific basis for optimizing the urban layout and alleviating the heat island effect.

Keywords

urban thermal environment; spatial pattern; driving factor; Geographically Weighted Regression model

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Funding

Guangdong Provincial Natural Science Foundation General Project (2024A1515011415)

About the authors

Wang Lihui (1999-), female, Han ethnicity, from Qingdao, Shandong Province, is currently pursuing a master's degree in Building Energy Efficiency and Outdoor Thermal Environment.