Screening of Noise Reduction Plant Species and Configuration Modes in Urban Road Green Belts

The noise-reducing capability of 16 species of greening plants was measured in order to find the plant configuration mode with good noise reduction effect in Chengdu,and three tree species and three shrub species were selected. Then, the seedlings of six plants were purchased and simulation tests were carried out to test the noise-reducing capability of various combinations. The result suggested that ① in the field experiment, Magnolia delavayi, Cinnamomum japonicum, Cinnamomum japonicum, Aucuba japonica, Hypericum monogynum and Loropetalum chinense showed strong noise-reducing capability. ② In simulation test, C. austrosinense + A. japonica, C. japonicum + L. chinense and Elaeocarpus decipiens + A. Japonica represented the best noise-reducing effect. A schematic diagram to the road greening was drawn to provide reference for the greening design and the improvement of human living environment in Chengdu.