ZHANG Jiayin¹,GUO Yunfei²,LI Yangyang¹,DU Xinli¹,DU Tao¹,ZHENGHao¹

(1. Shaanxi Environmental Monitoring Center, Xi’an 710054, China；
2. XI’AN Thermal Power Research Institute CO., LTD，Xi’an 710054, China)

Abstract: In this paper, the monitoring data of 2015 coming from 33 urban air quality automatic monitoring stations in Guanzhong region of Shaanxi Province, China were collected and studied, and the urban air quality characteristics and main influencing factors in Guanzhong region were discussed. Results show that air quality is closely related with cities in Guanzhong region. The main pollution factors affecting air quality in Guanzhong region are respirable particulate matter (PM10) and fine particulate matter (PM2.5). The primary pollutants show significant change with seasons. Human activities, meteorological factors and terrain features are the main causes for air quality in Guanzhong area.

Key words: Guanzhong region; air quality; ozone; particulate

EARTH AND ENVIRONMENT Vol.45, No.4, Tot No.318, 2017, Page 441-446