重庆市江津区空气污染指数变化特征及影响因素分析

Variation Characteristics and Influence Factors of Air Pollution Index in Jiangjin

摘要: 以2010~2014年重庆市江津区两个环境空气自动监测站逐日空气污染指数(API)、主要污染因子和空气质量级别为基础, 分析了近5年该区空气质量变化特征.结果表明, 重庆市江津区城市空气质量总体上以优、良天数为主, 主要污染因子为可吸入颗粒物. API从时间变化上看, 冬季空气质量最差, 春秋季次之, 夏季最好.气象因子、地理条件以及人类活动对城区空气质量影响显著.

Abstract: Based on the daily air pollution index (API), primary pollutant and air quality level of 2 automatic air monitoring stations in Jiangjin during 2010~2014, the characteristics of air quality were analyzed. The results showed that the urban air quality was excellent and good in the majority, and the primary pollutant was PM₁₀. The API of Jiangjin was worst in winter and best in summer. The air quality was impacted by meteorological factors, geographical conditions and human activities.