7月17日,国家环境保护部发布2016年上半年全国空气和地表水环境质量状况。数据显示,北京市、京津冀区域、长三角区域以及珠三角区域PM2.5浓度、PM10浓度持续下降且空气优良天数比例增加,但臭氧浓度持续走高。相关专家表示,臭氧浓度过高将对身体健康产生不利影响。环保部环境监测司司长罗毅介绍,2016年上半年,74个城市中空气质量相对较差的10个城市分别是保定、邢 July 17, the State Environmental Protection Department released the first half of 2016 the national air and surface water environmental quality status. The data show that PM2.5 concentrations and PM10 concentrations in Beijing, Beijing-Tianjin-Hebei region, Yangtze River Delta region and Pearl River Delta region continued to decline and the proportion of fine days increased, but the ozone concentration continued to rise. Experts said that the high ozone concentration will adversely affect their health. Luo Yi, director of the Ministry of Environmental Protection Environmental Monitoring Division introduced the first half of 2016, 74 cities in the relatively poor air quality in 10 cities are Baoding, Xing