The Impact of Urban Parks on PM10 Suspended Particles, Through Using GIS Software

The goal of this article is to analyze the impact of green space and urban parks on reduction of PM10 suspended particles and compare the resulted figures with the surrounding areas. In this research Laleh Park and its surroundings were selected. Laleh park with 35 hectares of land is located in district 6 of Tehran municipality limit. The park was developed 45 years ago and has performed as important asset in the district where served Tehran citizens by variety of uses such as recreational, sports, and amusement. For this purpose, long term studies were conducted and frequent visits made to project site, where eventually 14 monitoring stations equipped with standard instruments were installed to take field samples of PM10 suspended particles, twice daily (morning and evening),for a period of one year. On the basis of these measurements, the average seasonal and annual PM10 suspended particles were compared with figures obtained from the surrounding city pollution monitoring stations. Also in this area, meteorological parameters such as temperature, humidity, speed and direction of wind were measured. Through using GIS software as a potential system, dispersion pattern of particles in the environment was analyzed. Continuing the process, software (matlab) was able to show the spectrum of dispersion pattern from park central square to maximum radius of 3000 meters. Finally, the positive correlation between presence of space and reduction of suspended particles in the environment is shown based on PM10 dispersion pattern graphs drawn through use of GIS software.