[Objective] This study aimed to explore the noise-reducing effect of different species of color-leaf trees and the correlation between structural characteristics of trees and relative amount of noise reduction.[Method] The noise-reducing capability of 13 kinds of color-leaf trees in Xincheng District,Rizhao City was determined with sound level meter（TES1353H）,leaf area meter（CI-202） and hand-held weather station.[Result] There were certain differences in noise-reducing capability among the 13 kinds of color-leaf trees,of which the reduction capability for A-level noise ranged from 0.25 to 1.17 d B/m with reduction rates in the range of 8.61%-29.26%.Cotinus coggygria showed the best noise-reducing effect,while Acer platanoictes showed the worst.The relative amount of noise reduction was positively related to the canopy characteristics of trees,and it was affected by leaf thickness and the first branch height.[Conclusion] This study will lay a theoretical foundation for correct understanding on noise-reducing capacity of color-leaf trees and relevant influencing factors,and provide certain reference for the selection of noise-reducing tree species.
