Journal
SUSTAINABILITY
Volume 12, Issue 22, Pages -Publisher
MDPI
DOI: 10.3390/su12229499
Keywords
building; urban park; cold island effect; urban heat island
Funding
- Strategic Priority Research Program of Chinese Academy of Sciences [XDA20010203]
- National Natural Science Foundation of China [41971389]
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Urban parks have been considered as an effective measure to mitigate the urban heat island (UHI) effects. Many studies have investigated the impacts of shape, size and interior components on the cold island effect (CIE) of parks, while little attention has been given to the impact of neighboring buildings. Thus, taking twenty-two parks in Beijing as samples, this study investigated the impacts of the neighboring building on the CIE of central parks. The results showed that the average land surface temperature (LST) of parks are 30.98 degrees C in summer and -1.10 degrees C in winter. Parks have a strong CIE in summer, and average cold island footprint (CIF) and LST difference are 0.15 km(2) and 2.01 degrees C higher than that in winter. The components of the building in the CIF of parks are dominated by middle-rise building (MRB), followed by low-rise building (LRB), and high-rise building (HRB) is the least dominant. The percentage of landscape (PLAND) and landscape shape index (LSI) of MRB, and perimeter area fractal dimension (PAFRAC) of LRB are significantly related to CIF in summer and winter. This study could extend scientific understanding of the impacts of neighboring buildings on the CIE of central parks, and could guide urban planners in mitigating the UHI effects through the rational allocation of buildings.
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