From the mid-1700s to the early 1800s the industrial revolution transitioned the world into a new era of manufacturing and bringing with it all these modern advancements have increased air pollution beyond our belief. In built-up areas of suburbia and our inner cities, polluting gases, smog, and particulate matter are turning our air toxic. Until we learn how to protect the earth we live on, nature is our best defense to reverse the damage we’re causing.
Growing up, we learned about photosynthesis in science, whereby in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen-rich air. This is also done to the immediate air around them by absorbing and cleaning pollutants. The more plants you have around you or in a living green wall, the more this process multiplies.
Recent studies have shown that green walls can have a big impact on improving urban air quality, reducing concentrations of harmful pollutants. Living green walls in the gaps between tall buildings can be up to three times more effective than traditional green roofs, and they can reduce air pollution levels by as much as 60%.
Green living walls can provide an ideal microclimate within the gap, providing coolness during summer and warmth during winter, helping to control ambient temperature. A further benefit of green walls is that they provide much-needed habitat for insects, birds, and other small creatures. It has been shown that green walls can increase the number of butterflies by up to 50% and bees by 70%, compared with areas without.
Most urban environments don’t have the funds to invest in a green wall. The most affordable method for purifying the air in urban environments is to use a ‘fogging’ system. Fogging is a technique used for killing insects that involves using a fine pesticide spray (aerosol) which is directed by a blower. In some cases, a hot vapor may be used to carry the spray and keep it airborne for longer. This method is inexpensive, but it doesn’t create the kind of living space that a green wall does. Vertical gardens provide living space as well as a natural air filtration system. Plants are biological catalysts that break down pollutants and clean the air.
Green Infrastructure has become a hot topic in recent years. While the concept may not be new – living green walls have been used in cities since ancient Rome – they are becoming more widespread thanks to the efforts of urban planners and architects.
The benefits of living green are becoming more and more apparent to people around the world. A recent survey conducted by Green Wall International found that 87% of people surveyed have a positive view of green walls and that 59% of respondents said they would use green walls if they were available in their homes. In addition, 88% of respondents said they are willing to pay extra for a green wall installation. This is a great testament to the growing support of this innovative architectural element. People are now more aware than ever of the benefits of green walls in urban environments.
Conversely, when our urban environment is healthy, our bodies are healthier too.
