client, July 21. According to the Beijing Municipal Bureau of Ecology and Environment, in the first half of 2020, Beijing’s four major air pollutants have all declined year-on-year. Among them, the cumulative concentration of fine particulate matter (PM2.5) is 43 micrograms/ Cubic meters, down 8.5% year-on-year; cumulative concentrations of inhalable particulate matter (PM10), sulfur dioxide (SO2), and nitrogen dioxide (NO2) all decreased by more than 19% year-on-year; cumulative good days were 130 days, an increase of 17 days year-on-year; surface water countries The proportion of water quality assessment sections I-III is 64%, which dynamically meets the annual target requirements. The soil environmental quality of the city is generally good.