Inequitable Spatial and Temporal Patterns in the Distribution of Multiple Environmental Risks and Benefits in Metro...

Area of Science:

• Urban environmental health
• Spatial analysis of environmental justice
• Public health and urban planning

Background:

• Cities present complex interactions between environmental benefits and risks.
• These environmental factors are often inequitably distributed across urban populations.
• Understanding these spatial and temporal patterns is crucial for public health.

Purpose of the Study:

• To assess the spatial distribution of paired environmental risks and benefits in Metro Vancouver.
• To identify synergies and trade-offs in urban environmental quality over time (2006-2016).
• To evaluate disproportionate exposure of different population groups to environmental inequities.

Main Methods:

• Classification of census areas into 'sweet', 'sour', 'risky', or 'medium' spots based on six environmental combinations.
• Analysis of combinations including walkability, NO2, heat stress, vegetation, and access to natural areas.
• Use of linear regressions to assess population group exposure to environmental quality.

Main Results:

• Combined environmental exposures led to 'sweet spots' becoming better and 'sour spots' worsening over the decade.
• Residents with material/social deprivation and visible minorities faced disproportionate exposure to lower environmental quality.
• Specific groups, like South Asian residents, experienced increasing burdens or reduced benefits over time.

Conclusions:

• Cumulative exposure assessment is vital for prioritizing urban environmental interventions.
• Targeting 'sour' and 'risky' spots is essential for addressing persistent inequities.
• Urban planning must consider the interactive and cumulative effects of environmental factors on vulnerable populations.