Urban road greening allocation mode for reducing PM (particulate matter) 2.5

A configuration mode and road technology, applied in the field of road greening, can solve the problems of poor PM2.5 effect and low dust retention

Inactive Publication Date: 2013-01-23
张纪林 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an urban road greening configuration mode that reduces PM2.5, so as

Method used

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Embodiment 1

[0019] In March 2012, in Nanjing City, Jiangsu Province, a 3,800-meter road was implemented with a multi-layered green space configuration combining trees, shrubs, and lawns. In the middle section of the road, a three-dimensional configuration pattern of camphor x Photinia x crape myrtle x golden leaf privet x ground cover (Ophiopogon japonicus) is adopted. Camphor is 450-500cm high, 15-20cm diameter at breast height, and 230-250cm high under branches; crape myrtle is 200-250cm high, 5-8cm diameter at chest height; Photinia fruticosa and golden leaf privet are 40-50cm high and 30-40cm crown width. The three-dimensional configuration pattern of osmanthus × red maple × Phnom Penh boxwood × ground cover (scallion orchid) is adopted for the road side zoning. Osmanthus fragrans is 250-300cm in height, 5-10cm in diameter at breast height, and 120-150cm in crown width. Red maple is 150-200cm in height and 5-8cm in diameter at breast height; On both sides of the road, a three-dimensi...

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Abstract

The invention discloses an urban road greening allocation mode for reducing PM (particulate matter) 2.5. The allocation mode comprises the following steps: in the beginning of March, tree pits are dug in the middle zone, the side zones and the two sides of a road according to certain planting space, and cake fertilizer or composite fertilizer is applied in the tree pits; the middle zone of the road adopts the allocation mode of camphorwood, photinia fraseri, carpe myrtle, goldleaf privet and ground cover plant (ophiopogon japonicus); the side zones of the road adopt the allocation mode of sweet osmanthus, red maple, euonymus japonicus L.f. aureo-marginatus Rehd., and ground cover plant (zephyranthes candida); the two sides of the road adopt the allocation mode of koelreuteria paniculata, oleander, redrlowered loropetalum, pittosporum tobira and ground cover plant (zoysia matrella); and the plants are planted according to certain planting space and color block patterns, and the root-fixing water is watered on the plants. The urban road greening allocation mode is based on the urban PM 2.5 spatial distribution rule, the middle zone greening position effect and the tree-shrub-grass composite layer allocation effect in the urban road greening are enhanced, and the pollutants such as PM 2.5 and heavy metal emitted by motor vehicles are reduced to the maximum extent. The PM 2.5 concentration reduction efficiency of the urban road greening allocation mode is 1.86 times higher than that of a conventional road greening mode.

Description

technical field [0001] The invention belongs to the field of road greening and relates to an urban road greening configuration method for reducing PM2.5. Background technique [0002] PM2.5 refers to particulate matter in the ambient air with an equivalent diameter less than and equal to 2.5 microns, also known as particulate matter that can enter the lungs. The main source of PM2.5 is the residues emitted by combustion in the process of daily power generation, vehicle exhaust, and industrial production emissions. Although PM2.5 is only a small component in the earth's atmosphere, it has an important impact on air quality and visibility. Compared with coarser atmospheric particles, PM2.5 has a small particle size, is rich in a large amount of toxic and harmful substances, and has a long residence time in the atmosphere and a long transportation distance. Gas exchange, triggering diseases including asthma, bronchitis and cardiovascular disease. Therefore, it has a great im...

Claims

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Application Information

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IPC IPC(8): A01G1/00
Inventor 张纪林张冠一李淑琴
Owner 张纪林
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