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Related Experiment Video

Updated: Oct 7, 2025

Assessing the Particulate Matter Removal Abilities of Tree Leaves

Assessing the Particulate Matter Removal Abilities of Tree Leaves

Published on: October 7, 2018

Decrease in the residents' accessibility of summer cooling services due to green space loss in Chinese cities.

Yulin Dong¹, Zhibin Ren¹, Yao Fu²

¹Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China.

Environment International

|January 7, 2022

Summary

Urban green spaces (UGS) provide essential cooling benefits, but their coverage is declining in Chinese cities. This loss of UGS leads to more residents lacking access to crucial cooling services, especially in less affluent urban areas.

Keywords:

China Cooling effect Green space Remote sensing Urban heat

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Last Updated: Oct 7, 2025

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Area of Science:

Urban planning
Climate adaptation
Environmental science

Background:

Urban green spaces (UGS) mitigate urban heat island effects, offering vital cooling services.
Accessibility of these cooling services is crucial for climate adaptation strategies but remains poorly understood.
Declining UGS coverage poses a significant challenge to urban climate resilience.

Purpose of the Study:

To quantify the accessibility of UGS cooling services for urban residents in China.
To analyze trends in UGS area and coverage from 2003 to 2015.
To identify disparities in cooling service access based on city economic and population metrics.

Main Methods:

Analysis of annual changes in UGS area across 315 Chinese cities (2003-2015).
Estimation of resident access to UGS cooling benefits.
Statistical analysis of UGS coverage trends and spatial mismatch with urban populations.

Main Results:

A significant decrease in total UGS area was observed in 93.3% of cities, dropping from 12.23% to 7.69% coverage.
Cooling space coverage declined from 32.55% to 24.39%, increasing the number of residents outside these areas by 4.23 million annually.
Underdeveloped cities (GDP per capita < $20,000, population < 5 million) showed a more pronounced shortage of cooling services.

Conclusions:

Prevalent UGS loss creates a spatial mismatch between urban populations and cooling services.
Targeted urban greening initiatives are essential, particularly in economically disadvantaged cities.
Proactive greening plans are necessary to mitigate the impacts of rising temperatures and ensure equitable access to urban cooling benefits.