Reading — Urban Green Spaces

READING PASSAGE — Urban Green Spaces and Human Well-being

PARAGRAPH A
Urban green spaces — parks, gardens, street trees, and nature reserves within cities — have long been considered aesthetic luxuries. However, a growing body of scientific research now confirms that these environments play a critical role in public health, social cohesion, and environmental sustainability. As cities worldwide face unprecedented population growth, urban planners are increasingly being urged to incorporate green infrastructure into their designs.

PARAGRAPH B
The psychological benefits of urban green spaces are well-documented. Studies conducted across multiple continents consistently show that individuals who live within 300 metres of a park or green area report significantly lower levels of stress, anxiety, and depression compared to those in purely built environments. A landmark 2019 study by the University of Exeter found that spending just two hours per week in nature — whether in a single session or spread across several shorter visits — was associated with markedly better health and well-being outcomes.

PARAGRAPH C
Beyond mental health, green spaces provide measurable physical health benefits. Trees and vegetation reduce air pollution by absorbing particulate matter and releasing oxygen. A mature urban tree can absorb up to 22 kilograms of carbon dioxide annually and intercept substantial quantities of rainwater, reducing the risk of urban flooding. Furthermore, research indicates that communities with accessible parks tend to have higher rates of physical activity, with residents more likely to walk, jog, or cycle regularly.

PARAGRAPH D
Green spaces also serve as vital social infrastructure. Community gardens and neighbourhood parks function as informal gathering places where residents from diverse backgrounds interact, fostering social trust and reducing isolation. A study in Baltimore, USA, demonstrated that neighbourhoods with higher green coverage experienced lower rates of violent crime — a finding attributed to increased pedestrian activity and community surveillance rather than any direct effect of the vegetation itself.

PARAGRAPH E
Despite these benefits, access to urban green spaces is profoundly unequal. In many cities, wealthier neighbourhoods enjoy abundant parkland and tree canopy, while lower-income areas face a stark deficit. This disparity, termed "green gentrification" by researchers, creates a paradox: investment in urban greening may improve neighbourhoods to the point where rising property values displace the very communities the parks were meant to serve. Addressing this challenge requires deliberate policy frameworks that prioritise equitable access over aesthetic or economic value.

PARAGRAPH F
Looking ahead, cities are experimenting with innovative approaches to expand green space within constrained urban environments. Vertical gardens on building facades, rooftop parks, and the conversion of disused railway lines into elevated greenways are among the strategies being piloted in cities from Singapore to New York. While these interventions cannot fully substitute for traditional ground-level parks, they represent a promising complement to conventional green infrastructure planning.