10 evergreen plants were observed for the depostied atmospheric particle densities and micromorphology characteristics on their leaf surfaces. The results showed that their atmospheric particleretaining capabilities were different, and the highest unit area particles was P. asperata, followed by Cedrus deodara, Juniperus formosana, Pinus armandii, Sabina chinensis cv. kaizuca, Pinus tabulaeformis, Pinus bungeana, Sabina chinensis cv. pyramidalis, Platycladus orientalis and Euonymus japonicus. The original dustretaining status could be observed clearly by ESEM, but the micromorphology characteristics on the leaf surfaces of P. armandii and E. japonicus were covered by the heavy dust. The SEM observation results showed that there were apparent differences between the thoroughly rinsing and the unwashed samples, and the mock rainfall could greatly wipe off the atmospheric particles on the leaf surface. In general, there were certain relationship in the dustretaining capability of the leaf surface between the plant species and the leaf surface micromorphology characteristics.The microfeatures, such as embossment, grooves, stoma and texture increased the roughness of the leaf surface,which improved the particleretaining capabilities.

evergreen plants; atmospheric particles; atmospheric particleretaining capability; leaf surface micromorphology