Dust Retention Characteristics of Common Ground Cover Plant Leaves in Luoyang City During Sandstorms
In order to fully understand the changes in dust-retention capacity of plant leaves in gardens during sandstorms and the impact of leaf texture on dust retention,the study measures the dust retention per unit leaf area of 16 ground cover plants commonly used for landscaping in Luoyang City after the sandstorm in 2023,analyze the reasons behind the differences in leaf dust retention among the ground cover plants,and summarizes the influences of leaf texture on dust retention.The results show that:1)The total dust retention of Viburnum awabuki(0.221 6 mg·cm-2)is the highest,followed by Photinia×fraseri Dress(0.192 6 mg·cm-2),while the lowest is Oxalis corymbosa DC.(0.013 0 mg·cm-2);2)For the retention of PM0.1-2.5,Loropetalum chinense var.rubrum with trichome on the leaf surface retains the largest amount of dusts(0.014 1 mg·cm-2),and the minimum(0.000 5 mg·cm-2)is Kerria japonica;3)Leafy leaves and hairy leaves have better dust-retention effects on the ground cover plants,followed by paper leaves,while membrane leaves are the worst;4)The amount of PM10-100 retained on the leaf surface of the ground cover plants in dust weather is significantly higher than in non-dust weather,while the retention of PM2.5-10 show little significant change;and 5)The proportion of PM10-100 in total suspended particulate matters is higher in dust weather than in normal weather,while the proportion of PM0.1-2.5 decreases.When ground cover plants for landscaping are selected with the goal of preventing air pollution,it is recommended to choose plants with high dust-retention abilities such as V.awabuki,P.serrulata,and L.chinense var.rubrum since their leathery,thick,and hairy leaves are more conducive to have higher dust-retention effects.
万方数据
维普
