Impact of Auto Exhaust Pollution on Trees

Impact of Auto Exhaust Pollution on Trees

Environmental pollution and its impact on living organisms is worldwide problem. The pollutants discharged from the automobile activities are particulate matter, heavy metals (Pb and Cd), carbon dioxide, oxides of nitrogen and oxides producing toxic effects on plant growth. The other common effects are reduced yield of flowers, branch length, leaf area and reduction in seed germination percentage. This book chapter provide some information about the impact of auto exhaust pollution on plant growth. The importance of tree in the urban environment cannot be ignore. A number of studies on the effects of air pollution on tree growth have been carried out by researchers over the past many years in developed and in developing countries. Trees play an important role in maintaining the ecological balance, pollution reduction and lessening the burden of pollutant by absorbing pollutants. However, trees in urban cities are growing in a severe stressful environment due to incomplete burning of fossil fuel and badly maintained vehicles resulting shorten life span of plant. The growth of plants could be affected by several reasons and one of them is the presence of toxic pollutants derived from the auto vehicular exhaust emission.

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