Document Type : Research Paper
Authors
1 Assistant Professor, Department of Urban Planning, Faculty of Architecture and Urban Planning, Imam Khomeini International University, email: Adeli@arc.ikiu.ac.ir
2 Master of Urban Planning, Faculty of Architecture and Urban Planning, Imam Khomeini International University, Qazvin. Iran
Abstract
With the increasing expansion of urbanization and structural changes in the urban fabric, the quality of the urban environment, especially the air pollution situation, has become one of the serious challenges of metropolises. In the meantime, in addition to atmospheric conditions, vehicle traffic volume, natural features of the land, etc., the way urban spaces are organized and their morphological features also affect pollutant emission patterns; therefore, the purpose of this research is to investigate the relationship between urban form indicators in 22 districts of Tehran and the type and amount of air pollutants. For this purpose, after defining and selecting urban form indicators and measures (22 indicators that are specified in the dimensions of environmental design, land use, accessibility, and density), the quantitative level of each indicator in 22 districts of Tehran was calculated. Then, using data from the Air Quality Control Company, the annual average concentration of air pollutants (CO, O3, PM2.5, NO2, SO2) was calculated over a period of one year - from the beginning of Farvardin 1403 to the beginning of Farvardin 1404. The research method is based on the Pearson correlation method, in which the correlation of each urban form index with various air pollutants was obtained using SPSS software. The results of these correlations showed that the indices of residential unit density, gross population density, built-up area of the region, non-residential land use area, retail unit density, local services, fineness, distance traveled, pollution sources, and number of intersections with pollutants had a statistically significant correlation. This result indicates that urban space design patterns and urban form play a significant role in changes in air pollution and air quality, especially in 22 districts of Tehran.
Keywords
Main Subjects
)