Sustainable urban development

Green Space

Meaning statusEstablishedSource recordDirect document linkedWhy these are different

Definition

Green space refers to vegetated land within and around urban areas, including parks, gardens, street trees, green corridors, and remnant natural areas. The World Health Organization's accessibility benchmark treats green spaces of at least 0.5 hectares within 300 metres of home as the reference for adequate access, reflecting evidence that proximity, size, and quality all shape use and benefit.

References

ScienceDirectAccessibility to urban green spaces: a critical review of WHO recommendations (WHO: UGS ≥0.5 ha within 300 m of residential areas treated as accessible)

WHO accessibility benchmark

PMC (Perspectives in Public Health)Value of urban green spaces in promoting healthy living and wellbeing (mechanisms: physical activity, stress/attention recovery, social contact)

health evidence

Overview

What it means

Green space is health infrastructure: research links access to physical activity, stress recovery, social contact, and reduced exposure to heat, noise, and air pollution — with disadvantaged communities typically having least access despite benefiting most, making it an environmental-justice issue. It also delivers ecosystem services: cooling, stormwater retention, and urban biodiversity.

How it is used

City plans set green-space provision and accessibility targets; public-health bodies use WHO guidance; and equity analyses map distribution against income and vulnerability.

Why it matters

It is one of the few urban interventions with simultaneous health, climate-adaptation, biodiversity, and equity returns.