The invention discloses an urban courtyard
afforestation configuration mode for reducing PM 2.5, which comprises the following steps: in the first ten-day period of March, according to the
plant configuration standard, digging
plant pits and applying cake
fertilizer or compound
fertilizer in the
plant pits; at the front courtyard, adopting the configuration mode of planting zelkova schneiderianas, southern magnolias, sweet-scented
osmanthus trees, crape myrtle trees, red maples, pomegranate trees, rhododendron trees,
loropetalum chinense var. rubrums and ground cover plants (
gardenia and
radix ophiopogonis); at the rear courtyard, adopting the configuration mode of planting
hackberries, sweet-scented
osmanthus trees, Chinese redbud, euonvmus japonicus cv.aureo-ma, camellia and ground cover plants (zephyranthes candida); on the east and west sides of the courtyard, adopting the three-dimensional configuration mode of planting
koelreuteria paniculata, banana
shrub,
loropetalum chinense var. rubrums,
pittosporum tobira and ground cover plants (
gardenia and
zoysia matrella). According to the invention, based on the
spatial distribution pattern of urban PM 2.5, the
afforestation position effect and the arbor and
shrub multi-layer configuration effect of urban communities are strengthened, and the PM 2.5 exhausted by motor vehicles and heavy
metal pollutants in the communities are reduced to the greatest degree. With adoption of the urban courtyard
afforestation configuration mode disclosed by the invention, the concentration of the PM 2.5 can be decreased for 1.86 times as compared with that of adopting the conventional afforestation mode.