Changing coordination between urban area with high temperature and multiple landscapes in Wuhan City, China

Changes in urban landscapes are a direct inducement for changes in the urban thermal environment. Previous studies have focused on a single landscape in the urban thermal environment, but there is a lack of the research on the coupling effects of multiple landscapes. In this study, partial correlation analysis and spatial coupling model were used to explore the changing coordination between urban areas with high temperature and multiple landscapes (gray, green, and blue landscapes) in Wuhan City and their effects on land surface temperature (LST). The results showed that 6.22%, 0.52% and 25.91% of the blocks at the sub-district level behaved the dominant strong coupling relationship between the change trends of blue, green, as well as gray landscapes and urban thermal environment, respectively. For gray-green dominant strong coupling area, the change from blue landscape in 1988 to gray landscape in 2018 resulted in an average LST increase of 4.07 degrees C, which was 0.1 degrees C less than that in a single gray strong coupling area. It can be concluded that compared with single endothermic or exothermic landscape dominant strong coupling area, the multiple landscapes combining dominant strong coupling area will experience distinctly enhanced or weakened LST response to the same landscape change, respectively.