Air pollution abatement performances of green infrastructure in open road and built-up street canyon environments – A review

Abstract

Green infrastructure can play a significant role in mitigating urban air pollution. Air quality changes in local built environments due to vegetation are assessed. Low-level hedges improves air quality in street canyons unlike high-level trees. Green green walls and roofs are effective to reduce pollution in streets/open roads. Prior design of green infrastructure should be performed for improving air quality.