Planting hedges proves to be more effective than planting trees if you want to tackle air pollution | GBRI

Planting sgrubs

A new research published in Atmospheric Environment reveals that contrary to popular belief, hedges prove to be more efficient than trees in reducing pollution exposure and cleansing the air of toxins.

The study, undertaken by researchers at the University of Surrey, used six roadside locations in Guildford, UK, as test sites to find out how three types of road-side green infrastructure – trees, hedges, and a combination of trees with hedges and shrubs – affected the concentration levels of air pollution.

Researchers found that roadsides that only had hedges were the most effective at reducing pollution exposure, cutting the black carbon by up to 63%. They also observed an appreciable reduction in harmful heavy metals that originated from the traffic.

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