Speakers
Description
As large cities grow in size and density, they come under increasing pressure for space. Many under-viaducts spaces (UVSs) are being converted into open-air sports fields, but such spaces can cause air and noise problems for people playing sports. There is a lack of research on the pollution of the UVS. In order to finely analyse the environmental pollution in the UVS, the article takes an open-air sports ground under a bridge in Shanghai as an example, and collects PM2.5 concentration, noise sound level, temperature and humidity, and traffic flow by using mobile monitoring equipment such as PM:SidePak Aerosol Monitor AM520 and AWA6228 multifunctional sound level meter. The spatial and temporal distribution of PM2.5 and noise in winter in the UVS was investigated using descriptive statistics, spatial interpolation and visualisation. The results show that: (1) PM2.5 concentration and noise values at different times and points in the space under the bridge are higher than the baseline values, the spatial and temporal distribution of PM2.5 concentration fluctuates significantly, regional air pollution amplifies the relative exposure concentration of PM2.5, and the spatial and temporal distribution characteristics of noise are more stable; (2) the daily type difference of PM2.5 is greater than the time period difference, while the noise time period difference is greater than the daily type difference, and both of them are nearly arterial roads are elevated and near water bodies are reduced; (3) the air quality pollution intervals at the monitoring points account for 58.0%, and the Grade 5 sound environment intervals account for 95.5%, so the air and sound environments are poor, and the suitability of activities in the space under the bridge is low; (4) Air pollution is highly correlated with the built environment and traffic flow, while noise is more closely related to traffic flow and less so to the built environment, both of which have a negative correlation with temperature. This study provided valuable empirical evidence on the exposure to air and noise pollution in the sports space under viaduct in the micro-environment, which can help planners to adequately consider pollution reduction in the planning and management of urban renewal.
| Keywords | Under-Viaducts Space; Noise, PM2.5; Spatio-temporal distribution; Urban renewal; Shanghai |
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| Best Congress Paper Award | Yes |
