典型生态旅游城市黔江区秋季大气环境质量特征研究

摘要

为准确掌握生态旅游城市黔江区的大气质量状况,对黔江区2016年秋季大气环境质量进行分析,结果表明:2个观测站点的大气污染物浓度均满足《环境空气质量标准》(GB3095-2012)中二级标准要求,随着月份变化,S02浓度均呈增长趋势,03浓度则呈减少趋势.2个观测站点S02和N02的极显著相关性、N02与PM10的极显著性,表明污染物之间可能会有相似来源.气象参数与污染物均呈明显相关性,表明气象条件对污染物的扩散起着重要作用.HYSPLIT轨迹模型分析结果表明,黔江区域的大气划分为5种类型:西风环流、西北季风、东南风、东北方和极地气候共同作用结果.%To accurately evaluate the atmospheric environmental quality in typical ecotourism city in Qianjiang district,the fall of atmospheric environment quality was analyzed in 2016.The results shown that:The atmospheric pollutants concentration reached to the second grade standard of Ambient Air Quality Standard (GB3095-2012) in two observation sites,both the concentrations of SO2 were rising,and the concentrations of O3 were showed a trend of decreased.SO2 and NO2 were extremely significant correlation;NO2 and PM10 were extremely significant in two observation sites,which showed that there might be from similar sources between pollutants.The correlations of both meteorological parameters and pollutants were clear,which indicated that weather conditions play an important role for the spread of the contaminant.Backward trajectories model analysis results revealed that the atmospheric environmental quality was affected by five types in Qianjiang district,namely,west wind circulation,the northwest monsoons,southeast wind,northeast wind,and the polar climate.