Page 29 - 《华中农业大学学报》2026年第1期

第 1 期 刘亚南 等：公园夏季降温服务供给的城乡差异：基于热舒适和地表温度的双重视角 23

Urban-rural disparities in summer cooling services in parks based on
a dual perspective of thermal comfort and land surface temperature

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LIU Ya'nan ,PENG Jiuyao ,ZENG Peng ,XUE Wei ,LAI Xiaohong ,LIU Yaoyi 4
1.School of Architecture and Urban Planning， Chongqing Jiaotong University，
Chongqing 400074，China；
2.School of Digital Construction and Blasting Engineering/State Key Laboratory of
Precision Blasting， Jianghan University， Wuhan 430056， China；
3.School of Architecture， Southeast University， Nanjing 210096， China；
4.College of Landscape Architecture， Nanjing Forestry University， Nanjing 210037， China

Abstract Shanghai was used to systematically evaluate the cooling effectiveness of urban parks from
the perspective of thermal comfort to address the limitation of existing studies that rely heavily on the land
surface temperature （LST） and neglect the thermal comfort in environment.The modified temperature-hu‐
midity index （MTHI） was introduced to characterize the thermal comfort.The vector data of parks were in‐
tegrated with mobile signaling data to evaluate the cooling capacity in parks from the perspective of thermal
comfort.The cooling benefits of parks and urban-rural disparities based on MTHI and LST were compared.
The results showed that the cooling range of parks increased from the core urban area to the outskirts， but
the benefits evaluated with MTHI was overall lower than those with LST.The size of park， vegetation cov‐
erage， and water-body proportion was positively correlated with the intensity of cooling.The vegetation cov‐
erage was positively correlated with LST-based cooling distance， but negatively correlated with MTHI-

based cooling distance.The equivalent cooling service for population in the core urban area far exceeded that
in the suburbs due to its high density of population.However， the served population estimated with MTHI
was 54.5% lower than that with LST， indicating that traditional LST-based evaluation may significantly
over-estimate the benefits of parks.It is indicated that the thermal-comfort indexes should be introduced to
comprehensively evaluate the cooling benefits of parks and adopt differentiated strategies including increas‐
ing the supply of small parks in high-density urban areas and optimizing the design of parks in suburban ar‐
eas to accurately improve the thermal comfort of the living environment.
Keywords cooling effect in parks； heat island effect； thermal comfort； land surface temperature

（LST）； modified temperature‐humidity index （MTHI）； extreme high temperature； urban-rural disparities

（责任编辑：张志钰）