Inderscience Publishers

Responses of the urban roadside trees to traffic environment

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Courtesy of Inderscience Publishers

Purpose: The study is understand the relation between urban roadside tree growth and the traffic environment and an improvement to the traffic environment by using urban roadside trees. Design/methodology/approach: Eight common urban roadside trees subjected to many pollutants from automobile emissions were selected for research. The comparatively pollution-free parks far from the traffic environment were used as a control. Findings: The nearer the sampling location is to the traffic environment, the higher is the absorption of Pb, Cd, and S; the higher, the electric conductivity; and the lower the pH value in the leaves and bark of urban trees.

Keywords: urban trees, roadside trees, heavy metals, lead, cadmium, sulphur, electric conductivity, pH value, stomata density, traffic environment, urban traffic, automotive emissions, vehicle emissions, environmental pollution, air pollution

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