AQI在呼和浩特市大气环境质量评价中的应用

AQI（Air Quality Index，空气质量指数）是一套目前在国际上被广泛应用的大气环境质量评价体系，本文采用这一体系对呼和浩特市的空气质量进行了评价。根据2003年的监测数据，分析了本市2003年的大气环境现状及季节变化趋势；利用1990-2003年14年间的空气中污染物年均值，分析了本市大气环境质量的年际变化趋势。其结论为：呼和浩特市空气的主要污染因子为TSP，而且空气质量虽在逐渐好转，但仍然基本处于“不健康”的状态，因此，需要政府继续采取措施进一步改善。

APPLICATION OF AIR QUALITY INDEX IN AIR ENVIRONMENT QUALITY ASSESSMENT OF HOHHOT

AQI is adopted extensively as a series of air environmental quality assessment system in the world, the air quality of Hohhot is assessed by the AQI system. Based on the monitoring data in 2003, the current situation and seasonal change trends of air environment in 2003 of Hohhot was analyzed, through utilized the 14 years average value of air pollutants from 1990 to 2003, the yearly change trends are discussed. The results shows that the contributing factor of air pollution in Hohhot is TSP, and with the gradual improvement of air quality, it still stays in unhealthy stage, and the government needs to take further measures.