Research on the Dust-Capturing Capacities of Environmental Friendly Materials Based on the Typical Garden Trees and the Morphological Structure of Leaves in Suzhou

Abstract

Air pollution is one of the most serious environment pollution. 8 typical landscape plants, in Suzhou City, were selected to quantitative study their dust-capturing capacities, and the morphological traits of their leaves were observed under a SEM (scanning electron microscope). The paper showed that there were great differences in the dust-capturing capability of garden trees, and the dust-capturing capacities of garden trees in different seasons were in the order of May > August > November; the leaves of Cinnamomum camphora (L.) Pres, Camellia japonica L. and Euonymus japonicus Thunb. var. Ovatus Aureus had smooth surfaces or tubercles, whose dust-capturing capacities were poor, while the leaf of Loropetalum chinense(R.Br.) Oliv.Var. rubrum Yieh had many wrinkled form of cuticle, deep grooves, trichomes and high stomata desity which were favor of dust-retained, thus its dust- capturing capacity was stronger. The results can be seen as a possibility of select suitable species for urban environment.