Beckett K P, Freer-Smith P H, Taylor G
School of Biological Sciences, University of Sussex, Falmer, Brighton, East Sussex BN1 9QG, UK.
Environ Pollut. 1998;99(3):347-60. doi: 10.1016/s0269-7491(98)00016-5.
In recent years a substantial research effort has focused on the links between particulate air pollution and poor health. As a result the PM10 value has been set as a measure of such pollutants which can directly cause illness. Due to their large leaf areas relative to the ground on which they stand and the physical properties of their surfaces, trees can act as biological filters, removing large numbers of airborne particles and hence improving the quality of air in polluted environments. The role of vegetation and urban woodlands in reducing the effects of particulate pollution is reviewed here. The improvement of urban air quality achieved by establishing more trees in towns and cities is also illustrated.
近年来，大量研究工作聚焦于空气中的颗粒物污染与健康状况不佳之间的联系。因此，PM10值已被设定为这类可直接导致疾病的污染物的衡量指标。由于树木相对于其生长地面具有较大的叶面积以及其表面的物理特性，树木可充当生物过滤器，去除大量空气中的颗粒物，从而改善污染环境中的空气质量。本文综述了植被和城市林地在减轻颗粒物污染影响方面的作用。同时还说明了通过在城镇种植更多树木来改善城市空气质量的情况。
