Urban greening not only makes the cities of the future greener - it also helps them become more sustainable. Here’s how.
The built environment is at a turning point. As a sector, we play a central role in mitigating the effects of climate change and improving climate‑change adaptation. However, as populations grow, so does the demand for infrastructure. If we want to address the role our industries play in global warming, we must find ways to rethink inherited polluting processes, encourage greater collaboration and integrate nature into our designs and construction projects. In the coming years, as governments and countries seek ways to balance a growing population with the need to mitigate climate change, urban greening is expected to play a major role in the future of urban environments.
What is urban greening?
Urban greening is the integration of green spaces and elements into urban environments and infrastructure, such as streets, cities, roofs and walls. As a form of
biophilic design, urban‑greening initiatives are part of green infrastructure. The goal of urban greening is to improve the relationship between urban landscapes and their inhabitants. In the United Kingdom, the Mayor of London, Sadiq Khan, plans to significantly increase the amount of green space in the city in the coming decades as part of the
London Environment Strategy. A component of this proposal is the introduction of an urban‑greening factor to help London boroughs incorporate greening into development.
Why is urban greening important?
London is not alone in its greening efforts. By 2050, the global population will rise to nearly 10 billion, and cities will feel the greatest impact of this growth.
The growing demand for infrastructure brings the challenge of preserving the natural environment. At the same time, the health and well‑being of residents must be protected from the effects of climate change, including extreme weather conditions.
Urban greening can not only meet infrastructure needs but also ensure that cities remain sustainable, healthy and pleasant for future generations.
Seven benefits of urban greening
Greening urban spaces provides numerous benefits for the environment and its residents:
1. Reduces carbon emissions
Vegetation in cities can help absorb carbon‑dioxide emissions, acting as a natural carbon “sink” through the process of sequestration.
2. Improves resident well‑being
Natural environments support health and quality of life. Green public spaces and access to nature can reduce stress, improve morale, support the immune system and even lower the risk of chronic illnesses such as asthma.
3. Improves air quality
According to the World Health Organization (WHO), air pollution in urban and rural areas causes around 4.2 million premature deaths each year. This alarming figure highlights the importance of improving air quality, which is becoming an increasing priority as urban populations and activities grow.
4. Reduces noise
Trees and vegetation can reduce noise from city sources such as traffic and industry, lowering stress and health problems caused by daily exposure to noise. Trees, plants and foliage act as natural sound buffers, dampening the noise of cars, aircraft and industrial machinery and creating a calmer, more pleasant environment.
5. Mitigates global warming
Cities are often warmer than surrounding areas, and green urban spaces provide a cooling effect, reducing exposure to extreme heat.
6. Reduces flood risk
Flooding, another serious effect of climate change with potentially catastrophic consequences, can be mitigated through carefully designed urban planning that includes green spaces. Vegetation can slow stormwater runoff and reduce pressure on drainage systems.
7. Creates natural habitats for wildlife
Green spaces are essential for preserving biodiversity, providing habitats for species such as bees, which find necessary food there, and birds, which depend on trees for shelter and nourishment.
How can urban greening be integrated into cities and infrastructure?
There is a wide range of greening methods that city planners and companies can incorporate into their infrastructure, including:
- Tree‑lined streets
- Green roofs and walls
- Small green spaces between buildings
- Gardens
- Urban forests and mini‑forests
Conclusion
It is estimated that in 2023, 84.4% of the UK population lived in urban areas, and this growth shows no signs of slowing. While the built environment must provide green infrastructure to support a growing population, it must also place the environment at the centre of all projects. By integrating green spaces into urban areas, this could be achieved.
Urban greening offers solutions for more sustainable cities, and urban planning plays a key role in shaping the future.
Source:
https://www.ucem.ac.uk/whats-happening/articles/what-is-urban-greening/
Image: Zagreb Tourist Board, author: Julijen Duval
