Surface microcosmic structure and dust retention amounts of five evergreen species

¹ School of Geographic and Environmental Sciences, Tianjin Normal University, Tianjin 300387, China
² Tianjin Baodi District No. 10 Middle School, Tianjin 301800, China

^* Corresponding author’s e-mail: hemengxuan1989@126.com

Abstract

With the acceleration of urbanization, air pollution is getting worse especially during winter, which causes serious threat to people’s health. Large numbers of studies showed that green plants had a significant species on the retention of particulate matters. In view of this, this study selected five evergreen plants to explore the dust retention amounts of PM₁₀, PM_2.5, PM₁ per unit leaf area and the microstructure of leaf surface. The results showed that: 1. Within the unit leaf area: the dust retention amount (PM₁₀, PM_2.5, PM₁) of Yucca gloriosa was the highest, followed by Buxus sinica, and that of Ligustrum lucidum, Buxus megistophylla and Phyllostachys propinqua was relatively few. 2. The roughness of the leaf surface, the waxy layer, the stomata protruded, the number of stomata, stomata density, and stomatal opening and closing degree would affect the retention of particulate matter. The results obtained scientific guidance for plants collection in landscape greening with brilliant dust retention ability, and maximized the ecological effect of greening plants to mitigate air pollution.