This book investigates the feasibility of using trees to improve urban air quality using the West Midlands, UK conurbation as a case study. Data from a random, stratified field survey has been used to estimate the physical attributes of the West Midlands urban forest. An atmospheric chemistry and transport model (CiTTyCAT) is used to model the combined effects of pollutant deposition to, and the emission of biogenic volatile organic compounds (BVOCs) from the urban forest. While all trees can be beneficial to air quality in terms of the deposition of pollutants, some trees are responsible for...