2017

Trees in urban parks and forests reduce O3, but not NO2 concentrations in Baltimore, MD, USA

Highlights Empirical evidence of urban trees improving air quality at local level is scarce. We studied the impact of urban trees on NO2 and O3 levels in Baltimore, MD, USA. O3 levels were significantly lower in tree-covered than in adjacent open habitats. NO2 levels did not differ significantly between tree-covered and open habitats. Higher temperatures resulted in higher NO2 and …

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