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Cooling effect of urban small green spaces in Qujiang Campus, **’an Jiaotong University, China

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Abstract

The contradiction between the shortage of urban land and the demand for urban green space needs to be solved reasonably. Different from urban parks, the cooling effect of small green space (SGs) has not been paid enough attention or fully evaluated. The major objective of this research was to explore the cooling and energy saving benefits of SGs with administrative units. The ENVI-met and EnergyPlus models were built based on field measurements on the green space of **’an Jiaotong University Qujiang Campus. Field measurement shows that the closer an area to the green space, the lower the air temperature and the higher the relative humidity, especially in the daytime. The ENVI-met results showed that the SGs can reduce the temperature by 0.66 °C within the range of 1260 m × 1350 m compared with the building scene at noon, the EnergyPlus simulation results showed that the building 100 m away from the SGs can reduce the air conditioning energy consumption by 2.1% compared with the distance of 150 m. The research can improve the planning and design standards of urban green space, clarify the cooling and energy saving benefits of SGs, and promote the ecological urban design.

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Acknowledgments

The study was supported by NSFC General Project (grant number 51808440), China Postdoctoral Science Foundation (grant number 2021M692564) and the Opening Fund of Key Laboratory of Interactive Media Design and Equipment Service Innovation, Ministry of Culture and Tourism (grant number 20205).

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Correspondence to Meng Zhen.

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Feng, W., Ding, W., Zhen, M. et al. Cooling effect of urban small green spaces in Qujiang Campus, **’an Jiaotong University, China. Environ Dev Sustain 24, 4278–4298 (2022). https://doi.org/10.1007/s10668-021-01615-6

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