How mobility pattern shapes the association between static green space and dynamic green space exposure

Area of Science:

• Environmental Health
• Urban Planning
• Public Health

Background:

• Greenspaces are vital for mental and physical well-being.
• Research is shifting from static to dynamic greenspace exposure assessments using mobility data.
• Limited studies compare static and dynamic exposure methods and the role of mobility.

Purpose of the Study:

• To investigate how home/workplace greenspaces and mobility patterns influence dynamic greenspace exposure in Hong Kong.
• To compare static and dynamic greenspace exposure assessments.
• To understand the impact of individual mobility on greenspace exposure.

Main Methods:

• Utilized GPS tracking, portable sensors, and surveys from 787 participants in Hong Kong.
• Analyzed daily mobility patterns across socio-demographic and temporal factors.
• Employed linear mixed-effects models to assess interactions between static exposure and mobility.

Main Results:

• Significant variations in daily mobility patterns were observed.
• Complex and significant interactions were found between static greenspace exposure and mobility.
• Individual mobility patterns substantially modify the relationship between static and dynamic greenspace exposure.

Conclusions:

• Individual mobility is a critical factor in dynamic greenspace exposure assessments.
• Mobility patterns help explain variations in the relationship between static and dynamic greenspace exposure.
• Dynamic assessments offer a more nuanced understanding of greenspace health benefits.