2022年06月09日 星期四
More Blue Sky Days as China's Air Quality Improves
By WANG Xiaoxia

June 5 is World Environment Day, and the theme of 2022 is "Only One Earth." Volunteers are clearing floating garbage on a reservoir in Changning, central China's Hunan province. (PHOTO: XINHUA)

    With the continuing reduction of pollutant emissions, China has witnessed an improving ecological environment and more stable ecological system in 2021, according to the communique released by the Ministry of Ecology and Environment on May 26.

    Fine particulate matter (PM2.5) has been reduced for six consecutive years in China, while the surface water quality has been increased continuously.

    In 2021, the percentage of days with good air quality was 87.5 percent in 339 cities at and above the prefecture level, up 0.5 percentage points year-on-year. Air quality in 64.3 percent of the cities measured meets standards, up 3.5 percentage points year-on-year.

    For the first time, the annual average concentrations of airborne particles PM2.5, inhalable particulate matter(PM10), ozone, sulfur dioxide, nitrogen dioxide and carbon monoxide all saw year-on-year reductions in 2021.

    The proportion of surface water at or above Grade III (qualified for drinking water) in the country's five -tier water quality system increased 1.5 percentage points year-on-year to 84.9 percent in 2021.

    Meanwhile, the national ecological quality index (EQI) reached 59.77, indicating China's relatively rich biodiversity, a relatively high coverage of natural ecosystem, and a more complete ecological structure with a variety of functions.

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