This study aims to analyze the deposition characteristics of particles of major tree species in urban areas of Korea by conducting experiments. To simulate black carbon (BC) particles emitted by automobiles among particulate matter floating in the roadside air, soot particles are generated using a diffusion flame burner, whereas tire wear particles are generated by the mechanical friction between tires and asphalt specimen. The deposition characteristics of the particles of each tree species are compared using a deposition chamber, which was designed and manufactured for exposing the trees to the BC particles based on air flow analysis. The five types of tree species that were used for the experiments were Zelkova serrata, Metasequoia glyptostroboides, Pinus densiflora, Euonymus japonicus, and Spiraea prunifolia f. simpliciflora. The particle deposition velocity was used to determine and compare the particle deposition per unit area for the different species and was found to be highest in Spiraea prunifolia f. simpliciflora, followed by, in descending order, Zelkova serrata, Euonymus japonicus, Pinus densiflora, and Metasequoia glyptostroboides for both soot and tire wear particles. Furthermore, the particle deposition rate was used to determine and compare the degree of particle deposition in a space of equal volume, which was found to be highest in Pinus densiflora, followed by, in descending order, Metasequoia glyptostroboides, Zelkova serrata, Spiraea prunifolia f. simpliciflora, and Euonymus japonicus; the highest particle deposition rate of the tire wear particles was in Spiraea prunifolia f. simpliciflora, followed by, in descending order, Pinus densiflora, Euonymus japonicus, Zelkova serrata, and Metasequoia glyptostroboides. For broad-leaved trees, the degree of soot particle deposition on the front side differed from that on the back side. The particle deposition velocity and particle deposition rate varied according to the tree species due to surface roughness and geometrical features of the leaves and branches. The concentration of BC particles in the roadside air, which is produced by passing motor vehicles, can be reduced if the tree species that have high particle deposition rates are planted along the roadside.

本研究旨在通过进行实验分析韩国城市地区主要树种的颗粒沉积特征。为了模拟路边空气中漂浮的颗粒物中汽车排放的黑碳（BC）颗粒，使用扩散火焰燃烧器生成烟尘颗粒，而轮胎和沥青样本之间的机械摩擦则产生轮胎磨损颗粒。使用沉积室对每种树木物种的颗粒的沉积特性进行比较，该沉积室的设计和制造用于根据气流分析将树木暴露于BC颗粒。用于实验的五种树种分别是锯缘木（Zelkova s​​errata），水杉（M杉），水松（Pinus densiflora），大叶黄杨，和笑靥花F。单瓣花。颗粒沉积速度用于确定和比较不同物种每单位面积的颗粒沉积，发现其在绣线菊中最高。simpliciflora，然后按降序依次排列Zelkova s​​errata，Euonymus japonicus，Pinus densiflora和Metasequoia glyptostroboides来处理烟尘和轮胎磨损颗粒。此外，使用颗粒沉积速率来确定和比较在等体积空间中的颗粒沉积程度，发现该体积最高。松（Pinus densiflora），其后依次为水杉，水母（Zelkova s​​errata），绣线菊（Spiraea prunifolia f。）。simpliciflora和Euonymus japonicus ; 轮胎磨损颗粒中最高的颗粒沉积率是绣线菊。simpliciflora，然后按降序排列，依次为：Pinus densiflora，Euonymus japonicus，Zelkova s​​errata和Metasequoia glyptostroboides。对于阔叶树，烟灰颗粒在前侧的沉积程度与在后侧的不同。由于叶子和树枝的表面粗糙度和几何特征，颗粒沉积速度和颗粒沉积速率根据树木种类而变化。如果将具有高颗粒沉积率的树木种在路边，可以减少通过的机动车产生的路边空气中BC颗粒的浓度。