Impacts of Roadside Parked Trucks on the Distribution of Atmospheric Particulate Matter of Slow Lanes
Commuters in the slow lane close to urban roads face the risk of direct exposure to high pollution,and the phenomenon of roadside trucks stopping like solid barriers occurs from time to time,which makes the distribution of traffic pollution in the slow lane confusing.Therefore,this paper took a section of West Third Ring Expressway in Fuzhou as the research object,collected the concentration data of PM2.5 and BC in the roadside slow lane,and established the numerical model of ENVI-met.The results show that:(1)The concentration of PM2.5 is inversely proportional to the distance from the monitoring point to the pollution source,and the reduction efficiency is directly proportional to the vegetation density and width of the green belt.The concentration of PM2.5 in the peak period is higher than that in the flat peak period,while the concentration of BC is the opposite.The reduction efficiency of PM2.5 in the road sections with parked trucks and green belts is obviously improved.(2)Parking trucks on the roadside can reduce the concentration of PM2.5 on the roadside slow lane to a certain extent,but the excessive space shielding intensity can't achieve a better improvement effect,and even increase the pollution exposure of pedestrians on the roadside slow lane.
transportation carbon emissionspollutionPM2.5roadside parked trucksslow lane
万方数据
维普
