Urban green effects on land surface temperature caused by surface characteristics: A case study of summer Beijing metropolitan region

摘要

Highlights?The role that the landscape pattern played in cooling effect of urban greens is investigated.?The spatial extent influenced by urban greens is used to quantify the cooling effect.?With the same urban green area, the incompact mode plays better cooling effect than compact mode.AbstractThe pace of urbanization in China has increased in recent decades. Accordingly, the urbanized area has expanded at a spectacular rate and the urban heat island (UHI) has intensified. Understanding the effects of the landscape pattern on the UHI is crucial for optimizing urban structure, which could mitigate the UHI. This study focused on green cover in an urban area. To investigate how the composition and configuration of urban green patches would affect their temperature in Beijing metropolitan region, China, especially the influence of the configuration of green patches on their cooling effect, the relationships between green surface temperature (GST), normalized difference vegetation index (NDVI), and normalized compactn