Modeling the Impact of Urban Three-Dimensional Expansion on Atmospheric Environmental Conditions in an Old Industrial District: A Case Study in Shenyang, China
Chunlin Li 1  
,   Yanyan Xu 2  
,   Miao Liu 1  
,   Yuanman Hu 1  
,   Na Huang 3  
,   Wen Wu 4  
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CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
School of Architecture, Tianjin Chengjian University, Tianjin, China
School of Architecture and Urban Planning, Shenyang Jianzhu University, Shenyang, China
Jangho Architecture College, Northeastern University, Shenyang, China
Miao Liu   

CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, China
Submission date: 2019-08-05
Final revision date: 2019-10-14
Acceptance date: 2019-10-15
Online publication date: 2020-03-23
Publication date: 2020-05-12
Pol. J. Environ. Stud. 2020;29(5):3171–3181
The rapid expansion of cities has caused enormous changes in the underlying surface, and coupled with the intensification of human activities, it has resulted in a series of ecological and environmental problems, such as urban heat island, air pollution, and so on. Through combining building height and air pollution source information, and using the computational fluid dynamics (CFD) model, this study simulated the distribution characteristics of wind speed, temperature and SO2 concentration under the condition of urban three-dimensional expansion, and then the analysis was performed on the influence of three-dimensional expansion on air environment diffusion during winter and spring in the Shenyang Tiexi District under the urban landscape pattern of 2005 and 2011. Monitoring data from 10 sampling sites were used to validate the model. The results showed that the R2 values for wind speed, temperature and SO2 were 0.76, 0.79 and 0.64, respectively. The wind speed, temperature and SO2 concentration distribution pattern at the same height of the study area is obviously different because of the differences in urban building height, density and layout between 2005 and 2011. From 2005 to 2011, with the change in the urban architecture landscape pattern, the city corridor significantly changed.