乐山大佛景区环境空气质量变化规律及污染特征研究

根据乐山大佛景区环境空气质量监测数据,分析了3种污染物的时间变化规律及污染特征。结果表明:乐山大佛景区环境空气质量相对较好,优良率在87%以上,可吸入颗粒物浓度值在低浓度水平的基础上有上升的变化趋势,达到现行国家环境空气质量标准,二氧化硫、二氧化氮的污染总体上变化不显著。乐山大佛景区与乐山市主城区地域基本形成了"景城一体"的关系,景区的环境空气质量受主城区的影响较大。

Variation and Pollution Characteristics of Atmospheric Environment in Leshan Giant Buddha Scenic Area

According to the air monitoring data of Leshan Giant Buddha scenic area, this paper analyses on the characteristicsof time variation and three kinds of pollutants. The results show that the atmospheric environment of Leshan Giant Buddha scenicarea is relatively good. The excellent and good rate was above 87%, inhalable particulate matter concentration is on a risingtrend, but still at a low concentration level, meeting the national ambient air quality standards. The concentration of sulfur dioxideand nitrogen dioxide do not change significantly. Leshan Giant Buddha scenic area and Leshan City area have basically formed anintegrated area.