Abstract
A modeling study using hourly meteorological and pollution concentration data from across the coterminous
United States demonstrates that urban trees remove large amounts of air pollution that consequently irnprove urban
air quality. Pollution removal (03, PMio, NO2, SO2, CO) varied among cities with total annual air pollution removal
by US urban trees estimated at 71 1,000 metric tons ($3.8 billion value). Pollution removal is only one of various ways
that urban trees affect air quality. Integrated studies of tree effects on air pollution reveal that management of urban
tree canopy cover could be a viable strategy to improve air quality and help meet clean air standards.
Published by Elsevier Gm bH.