Urban green spaces: More than just a checkbox for sustainable cities

The expansion of urban green spaces is a growing priority for creating sustainable cities, yet a critical question lingers: do these areas genuinely contribute to pollution reduction, or do they simply serve to meet planning quotas? Research comparing user experiences in parks in Melaka, Malaysia, and Padang, Indonesia, indicates that green spaces can indeed mitigate air, noise, and water pollution, although their impact is not uniform across all parks and pollution types.

The most evident benefit identified by park users is the reduction of air pollution, primarily attributed to the presence of trees and vegetation. However, not all green areas function optimally. Small parks with insufficient mature trees, inadequate vegetation cover, or proximity to busy traffic routes may fail to act as effective pollution buffers. The study highlights that the size of the park, the type and density of vegetation, its location, the inclusion of water features, and the quality of governance all influence how well these spaces perform their environmental functions.

Consequently, local authorities must move beyond merely tracking the number or total area of green spaces. The focus needs to shift from 'how much green space is provided' to 'how effectively does the green space function.' This requires a more strategic approach, including planting more mature trees and suitable vegetation, establishing green buffer zones along busy roads, incorporating water-sensitive urban design principles, and ensuring parks are appropriately sized and designed for ecological purposes.

Effective management of these spaces also demands better coordination among relevant government departments and agencies. The article concludes that a truly green city is not defined solely by the quantity of its parks but by the quality and functional performance of its green infrastructure. Shifting the measure of success from quantity to quality and function is essential, otherwise, cities may appear green on maps but fail to deliver tangible environmental benefits to their residents.